CN102816910A - Control technology of bulk electrodeposited nanocrystalline nickel-iron alloy cold-rolled texture - Google Patents
Control technology of bulk electrodeposited nanocrystalline nickel-iron alloy cold-rolled texture Download PDFInfo
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- CN102816910A CN102816910A CN2012103017927A CN201210301792A CN102816910A CN 102816910 A CN102816910 A CN 102816910A CN 2012103017927 A CN2012103017927 A CN 2012103017927A CN 201210301792 A CN201210301792 A CN 201210301792A CN 102816910 A CN102816910 A CN 102816910A
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Abstract
The invention relates to a control technology of a bulk electrodeposited nanocrystalline nickel-iron alloy cold-rolled texture, which comprises the following steps that (1) a plate with a set angle between a surface to be rolled and an electrodeposited surface is cut from bulk electrodeposited nanocrystalline nickel-iron alloy; and (2) synchronous or asynchronous rolling is carried out at liquid nitrogen temperature or at room temperature. The rolling is performed in a synchronous or asynchronous rolling mill, and the plate is rolled in the same direction for several passes. The liquid nitrogen temperature rolling means that before rolling, a material is soaked in liquid nitrogen for 3 minutes and then is rolled, and the material is immediately soaked in the liquid nitrogen for 3 minutes before the rolling of next pass; and the room temperature rolling is the general cold-rolling, i.e., the rolling is directly carried out at room temperature. The control technology provided by the invention is suitable for the control and optimization of the cold rolling texture of a nano-metal material.
Description
Technical field
The present invention relates to a kind of control techniques of block galvanic deposit nano crystal material cold rolling texture, be specifically related to the control techniques of nano-crystal nickel iron alloy cold rolling texture, belong to the metallic substance rolling technical field.
Background technology
Nano crystal material is made up of crystal constituent element and boundary component.The crystal constituent element is made up of the atom in the crystal grain, and these atom strictnesses are positioned on the crystallographic site, the crystalline structure basically identical of this and traditional coarse grain material.The volume(tric)fraction of boundary component in nano crystal material is high, and its structure is also very complicated, and be closely related with preparation methods, bonding type, composition and the factors such as impurity that comprise.Through a large amount of experiment tests, calculating simulation and theoretical analysis; Find that when the grain-size of metallic substance is reduced to nanometer scale it shows the different unique mechanical properties of a series of and common polycrystalline material, particular structure-property relationship (like anti-Hall-Petch relation).
When viscous deformation takes place in polycrystalline material under external force; The continuous slippage of intracrystalline dislocation; Simultaneously crystalline orientation is also done corresponding the rotation thereupon, the result that polycrystalline material crystal grain rotates often make crystalline orientation gather a certain or some orientation near, thereby form deformation texture.The viscous deformation mechanism of nano crystal material is different with traditional coarse grain material; Its nanocrystal inside is difficult to hold dislocation and forms piling up of dislocations; Crystal boundary slippage/crystal grain rotating mechanism has been participated in its plastic history, thereby some new features may appear in crystalline orientation rotation path and the Texture Evolution of nano crystal material in plastic history.
The texture of polycrystalline material and performance anisotropy are closely related, and its mechanics to material, processing, performance such as anti-corrosion have material impact.Through the texture of control material, can come the anisotropy of control material as required, to reach the purpose of eliminate the harmful effect, performance performance potential, raising material property.Because nano crystal material has and traditional polycrystalline material various structure-property relationship, thereby, can be its performance optimization more method and approach are provided, further develop its performance potential through texture control to nano material.
Summary of the invention
The objective of the invention is, in order to regulate and control the cold rolling texture of block galvanic deposit nano-crystal nickel iron alloy effectively, and make its technology simple, with low cost, the present invention discloses a kind of control techniques of block galvanic deposit nano-crystal nickel iron alloy cold rolling texture.
The present invention realizes that through following technical scheme the control techniques of block galvanic deposit nano-crystal nickel iron alloy cold rolling texture of the present invention may further comprise the steps:
(1) cuts the plan rolling surface becomes set angle with galvanic deposit face sheet material from block galvanic deposit nano-crystal nickel iron alloy.
(2) carry out synchronously or asymmetrical rolling in liquid nitrogen temperature or room temperature.
Rolling is on synchronous or asynchronous rolling machine, to carry out, and sheet material is rolled by same direction branch passage;
Liquid nitrogen temperature is rolling to be meant before rolling, earlier material (temperature is 77 K) in liquid nitrogen to be soaked and to be rolled more than 3 minutes again, and every through behind a passage rolling, immediately with material immerse soak 3 minutes in the liquid nitrogen after, descend the rolling of a time again;
Room temperature is rolling promptly so-called cold rolling usually, is at room temperature directly to be rolled.
The composition of Rhometal of the present invention is: the quality percentage composition of iron is 10～64%, and nickel is surplus.
The invention has the beneficial effects as follows; (1) intends rolling surface becomes different angles with galvanic deposit face sheet material through cutting from original nano material; The special microtexture and the rolling stress state of galvanic deposit nano material are coupled together effectively; Thereby obtain different cold rolling textures, the purpose that reaches texture control and optimize; (2) rolling deformation that carries out under the liquid nitrogen temperature can greatly suppress the dynamic recovery of material in the operation of rolling, obtains and the rolling different cold rolling texture of room temperature, helps the control and the optimization of cold rolling texture; (3) the present invention has very strong ability of regulation and control to the cold rolling texture of nano metal material, adopts technology of the present invention can obtain various, the strong and weak controlled cold rolling texture of texture type.
The present invention is applicable to the control of the cold rolling texture of nano metal material and optimization.
Description of drawings
Fig. 1 is the mode synoptic diagram of drawing materials; Be exemplified as rolling surface becomes 0 ° and 90 ° sheet material with galvanic deposit face the mode of drawing materials of intending among the figure; Wherein: the 1st, the galvanic deposit direction; The 2nd, become the plan rolling surface of 0 ° of angle with galvanic deposit face; The 3rd, become the plan rolling surface of 90 ° of angles with galvanic deposit face; The 4th, galvanic deposit face; RD be roll to, TD be laterally, ND is normal direction;
Fig. 2 is rolling surface and galvanic deposit face angle when being 0 °, the rolling front and back of sheet material room temperature
φ 2=0o, 45o and 65o ODF sectional view;
Fig. 3 is rolling surface and galvanic deposit face angle when being 90 °, the rolling front and back of sheet material room temperature
φ 2=0o, 45o and 65o ODF sectional view;
Fig. 4 is rolling surface and galvanic deposit face angle when being 0 °, and sheet material is in the rolling front and back of liquid nitrogen temperature
φ 2=0o, 45o and 65o ODF sectional view;
Fig. 5 is rolling surface and galvanic deposit face angle when being 90 °, and sheet material is in the rolling front and back of liquid nitrogen temperature
φ 2=0o, 45o and 65o ODF sectional view.
Embodiment
Embodiment 1
With block galvanic deposit nano-crystal nickel iron alloy (by mass percentage; Ni accounts for 82%; Fe accounts for 18%) galvanic deposit face as intending rolling surface (promptly intending rolling surface and galvanic deposit face angulation is 0 °); Cut sheet material from original nano material, at room temperature be rolled, cold roling reduction is respectively 15%, 20% and 30% of sheet metal thickness.
Adopt X-ray diffractometer that macroscopical texture of cold rolling front and back material is carried out test analysis, test surfaces is material (plan) rolling surface.Schulz back scattering method measures that { 111}, { 200} is with { three imperfect utmost point figure of 220}, with the orientation distribution function of business software LaboTex analysis of material, analytical results is with the perseverance of Bunge system
φ 2Sectional view (△
φ 2=5) expression.In the orientation distribution function (ODF) of cold rolling front and back material
φ 2=0o, 45o and 65o sectional view are as shown in Figure 2.
φ 2Be to constitute three coordinate axis of Bunge system
φ 1,
φ 2,
ψOne of,
φ 1With
ψMeet at right angles,
φ 2Perpendicular to
φ 1,
ψThe plane that constitutes.
As can beappreciated from fig. 2, cold rolling preceding deposited material has stronger { 100} silk weaving structure.Cold rolling reduction is 15% o'clock, and initial { 100} silk weaving structure obviously weakens (orientation density Max from 3.251 to 2.571).When further increase cold rolling reduction to 20%, initial { 100} silk weaving structure disappears, and more weak goss texture ({ 011} < 100 >) and copper texture ({ 112} < 111 >) have occurred.When cold rolling reduction increased to 30%, goss texture and copper texture were further strengthened, and had occurred tangible cubic texture ({ 001} < 100 >) in addition.
Embodiment 2
With block galvanic deposit nano-crystal nickel iron alloy (by mass percentage; Ni accounts for 80%; Fe accounts for 20%) xsect as intending rolling surface (promptly intending rolling surface and galvanic deposit face angulation is 90 °); Cut sheet material from original nano material, at room temperature be rolled, cold roling reduction is respectively 10%, 20% and 30% of sheet metal thickness.
Adopt X-ray diffractometer that macroscopical texture of cold rolling front and back material is carried out test analysis, test surfaces is material (plan) rolling surface.Schulz back scattering method measures that { 111}, { 200} is with { three imperfect utmost point figure of 220}, with the orientation distribution function of business software LaboTex analysis of material, analytical results is with the perseverance of Bunge system
φ 2Sectional view (△
φ 2=5) expression.Cold rolling front and back material
φ 2=0o, 45o and 65o ODF sectional view are as shown in Figure 3.
As can beappreciated from fig. 3, the initial texture of material mainly comprises cubic texture ({ 001} < 100 >) and rotates goss texture ({ 011} < 011 >) before cold rolling.When cold rolling reduction was 10%, cubic texture weakened, and the rotation goss texture obviously strengthens, and more weak brass texture ({ 011} < 211 >) occurred.When continuing to increase cold rolling reduction to 20% and 30%, rotation goss texture and brass texture continue to strengthen.
With block galvanic deposit nano-crystal nickel iron alloy (by mass percentage; Ni accounts for 75%; Fe accounts for 25%) galvanic deposit face as intending rolling surface (promptly intending rolling surface and galvanic deposit face angulation is 0 °); Cut sheet material from original nano material, under liquid nitrogen temperature, be rolled, cold roling reduction is respectively 10%, 20% and 30% of sheet metal thickness.
Adopt X-ray diffractometer that macroscopical texture of cold rolling front and back material is carried out test analysis, test surfaces is material (plan) rolling surface.Schulz back scattering method measures that { 111}, { 200} is with { three imperfect utmost point figure of 220}, with the orientation distribution function of business software LaboTex analysis of material, analytical results is with the perseverance of Bunge system
φ 2Sectional view (△
φ 2=5) expression.Cold rolling front and back material
φ 2=0o, 45o and 65o ODF sectional view are as shown in Figure 4.
As can beappreciated from fig. 4; The Texture Evolution characteristic of material is closely similar with the Texture Evolution characteristic (seeing embodiment 1) in the same usable material chamber warm-rolling system process in the liquid nitrogen temperature operation of rolling; Promptly along with the increase of deflection; Initially { 100} silk weaving structure weakens to disappearance gradually, and typical cold rolling texture (goss texture and copper texture) is strengthened gradually.Rollingly with room temperature different be; The development of texture is slower in the liquid nitrogen temperature operation of rolling; The orientation density of same texture component is lower under the identical deflection, and texture evolution lags behind to some extent, and this is owing to dislocation motion in the liquid nitrogen temperature operation of rolling and friendship slippage are suppressed to a certain extent; Flow stress improves, and then texture evolution is slowed down.
Embodiment 4
With block galvanic deposit nano-crystal nickel iron alloy (by mass percentage; Ni accounts for 75%; Fe accounts for 25%) xsect as intending rolling surface (promptly intending rolling surface and galvanic deposit face angulation is 90 °); Cut sheet material from original nano material, under liquid nitrogen temperature, be rolled, cold roling reduction is respectively 10%, 20% and 30% of sheet metal thickness.
Adopt X-ray diffractometer that macroscopical texture of cold rolling front and back material is carried out test analysis, test surfaces is material (plan) rolling surface.Schulz back scattering method measures that { 111}, { 200} is with { three imperfect utmost point figure of 220}, with the orientation distribution function of business software LaboTex analysis of material, analytical results is with the perseverance of Bunge system
φ 2Sectional view (△
φ 2=5) expression.Cold rolling front and back material
φ 2=0o, 45o and 65o ODF sectional view are as shown in Figure 5.
As can beappreciated from fig. 5; The Texture Evolution characteristic of material is closely similar with the Texture Evolution characteristic (seeing embodiment 2) in the same usable material chamber warm-rolling system process in the liquid nitrogen temperature operation of rolling; Promptly along with the increase of deflection; Initial cubic texture weakens gradually, and rotation goss texture and brass texture obviously strengthen.Rollingly with room temperature different be; The development of texture is slower in the liquid nitrogen temperature operation of rolling; The orientation density of same texture component is lower under the identical deflection; Texture evolution lag behind to some extent (as in rolling 30% material of room temperature the rotation goss texture orientation density Max be 7.189, and the orientation density Max of corresponding texture is 4.502 in rolling 30% material of liquid nitrogen temperature).
Claims (2)
1. the control techniques of a block galvanic deposit nano-crystal nickel iron alloy cold rolling texture is characterized in that said control techniques may further comprise the steps:
(1) cuts the plan rolling surface becomes set angle with galvanic deposit face sheet material from block galvanic deposit nano-crystal nickel iron alloy;
(2) carry out synchronously or asymmetrical rolling in liquid nitrogen temperature or room temperature;
Said rolling be on synchronous or asynchronous rolling machine, to carry out, sheet material is rolled by same direction branch passage;
Said liquid nitrogen temperature is rolling to be meant before rolling, earlier material to be soaked in liquid nitrogen and to be rolled in 3 minutes again, and every through behind a passage rolling, immediately material is immersed in the liquid nitrogen immersion and descends the rolling of a time again after 3 minutes;
Said room temperature is rolling to be common cold rolling, is at room temperature directly to be rolled.
2. the control techniques of block galvanic deposit nano-crystal nickel iron alloy cold rolling texture according to claim 1 is characterized in that the quality percentage composition of iron is 10～64% in the said Rhometal, and nickel is surplus.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543693A (en) * | 2015-12-17 | 2016-05-04 | 东北大学 | Deep cold rolling method for Invar steel belt |
| CN111097799A (en) * | 2019-12-30 | 2020-05-05 | 兰州理工大学 | Short-process rolling method of nickel strip |
-
2012
- 2012-08-23 CN CN2012103017927A patent/CN102816910A/en active Pending
Non-Patent Citations (7)
| Title |
|---|
| 《ACTA MATERIALIA》 20090731 L. Li et al. Microstructure evolution during cold rolling in a nanocrystalline Ni-Fe alloy determined by synchrotron X-ray diffraction 第4488-5000页 1-2 第57卷, * |
| 《scripta materialia》 20081108 L. Li et al. Simultaneous reductions of dislocation and twin densities with grain growth during cold rolling in a nanocrystalline Ni-Fe alloy 第317-320页 1-2 第60卷, * |
| L. LI ET AL.: "Microstructure evolution during cold rolling in a nanocrystalline Ni–Fe alloy determined by synchrotron X-ray diffraction", 《ACTA MATERIALIA》 * |
| L. LI ET AL.: "Simultaneous reductions of dislocation and twin densities with grain growth during cold rolling in a nanocrystalline Ni–Fe alloy", 《SCRIPTA MATERIALIA》 * |
| 杨艳玲: "镍及镍铁纳米材料的制备与冷轧-退火织构的研究", 《万方数据知识服务平台-学位论文》 * |
| 杨艳玲等: "电沉积纳米晶Ni_19%Fe合金热稳定性研究", 《江西科学》 * |
| 杨艳玲等: "纳米晶镍铁合金的再结晶织构演变", 《热处理技术与装备》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105543693A (en) * | 2015-12-17 | 2016-05-04 | 东北大学 | Deep cold rolling method for Invar steel belt |
| CN111097799A (en) * | 2019-12-30 | 2020-05-05 | 兰州理工大学 | Short-process rolling method of nickel strip |
| CN111097799B (en) * | 2019-12-30 | 2021-06-18 | 兰州理工大学 | Short-process rolling method of nickel strip |
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Application publication date: 20121212 |