超细Ni80Cr20合金丝的冷拉拔制备及表征

朱延军; 周秀文; 曹林洪; 刘旭东; 吴卫东

doi:10.3788/HPLPB201426.022008

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超细Ni80Cr20合金丝的冷拉拔制备及表征

doi: 10.3788/HPLPB201426.022008

朱延军^1,2,3,
周秀文²,
曹林洪^1,3, ,,
刘旭东²,
吴卫东^2,3

1.
西南科技大学, 四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地, 四川绵阳 621 01 0;
2.
中国工程物理研究院激光聚变研究中心, 四川绵阳 621 900;
3.
西南科技大学-中国工程物理研究院激光聚变研究中心极端条件物质特性联合实验室, 四川绵阳 621 01 0

详细信息

通讯作者:
曹林洪

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- 被引次数: 0
出版历程
- 收稿日期: 2013-07-28
- 修回日期: 2013-11-22
- 刊出日期: 2014-02-15

Preparation and characterization of ultra-thin Ni80Cr20 alloy wire by cold drawing

Zhu Yanjun^1,2,3,
Zhou Xiuwen²,
Cao Linhong^{1,3
, ,},
Liu Xudong²,
Wu Weidong^2,3

1.
State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials,Southwest University of Science and Technology,Mianyang 621010,China;
2.
Research Center of Laser Fusion,CAEP,Mianyang 621900,China;
3.
Joint Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology and Research Center of Laser Fusion,CAEP,Mianyang 621010,China

摘要

摘要: 开展特定直径超细Ni80Cr20合金丝的冷拉拔制备研究，并通过扫描电子显微镜（SEM）、X射线衍射仪（XRD）和金属丝强力仪等对超细合金丝进行了表征。研究结果表明：烧头过程最佳电解液浓度为0.05 mol/L，时间为3 s；制备的镍铬合金丝直径为24.54 m，表面光滑，尺寸精准；拉拔后晶粒尺寸减小，退火后晶粒尺寸长大；拉拔态镍铬丝由于加工硬化，其伸长率由16%降低至1.88%；退火可改善镍铬丝性能，其断裂强度降低，伸长率增大，合金塑性增强，氮气退火丝的断裂强度大于真空退火丝的断裂强度，伸长率则相反。
- Ni80Cr20合金 /
- 超细丝 /
- 冷拉拔 /
- 退火 /
- 力学性能
Abstract: The preparation process of ultrafine ultra-thin Ni80Cr20 alloy wire was studied by cold drawing. The property of NiCr alloy wire was characterized by SEM, XRD and tensile tester. The results show that the optimal electrolyte concentration and time were 0.05 mol/L and 3 s in the process of electrolytic corrosion, respectively. NiCr alloy wire with a smooth surface, precise dimensions and the diameter range of 24.54 m was obtained. After drawing, the grain size decreased, and the grain size grew up after annealing. Due to work harding appearing in the drawing process, the elongation decreased from 16% to 1.88%. The fracture strength decreases and the elongation and plasticity increases after annealing. The fracture strength of wire annealed in N2 is greater than in vacuum. On the contrary, the elongation of wire annealed in N2 is less than in vacuum.
- Ni80Cr20 alloy /
- ultra-thin wire /
- cold drawing /
- annealing /
- mechanical properties