立方织构Ni-Cr-Mo-W合金薄带及其性能

发布时间：2018-06-30 10:04

本文选题：Ni-Cr-Mo-W合金 + 再结晶织构　；参考：《材料导报》2017年20期

【摘要】：为了得到高份额立方织构金属基带,同时兼顾居里温度和屈服强度的要求,设计了Ni-7.8%Cr-1.1%Mo-1.6%W(原子分数)合金。采用冷坩埚悬浮熔炼技术冶炼合金铸锭,铸锭经过锻造、热轧、冷轧和再结晶退火,最终得到厚度为100μm的合金薄带。采用电子背散射衍射(EBSD)技术对合金薄带再结晶织构进行了表征,并研究了其磁性能及力学性能。结果表明:经大变形量冷轧和优化的两步法退火后Ni-7.8%Cr-1.1%Mo-1.6%W合金薄带立方织构份额为93.4%,小角晶界体积分数为84.5%;合金薄带的居里温度为25K,远低于77K;合金薄带室温下的屈服强度为182 MPa,与Ni-5%W合金相当,且抗拉性能十分优异。
[Abstract]:In order to obtain a high proportion cubic texture metal base band and to meet the requirements of Curie temperature and yield strength, Ni-7.8Cr-1.1 Mo-1.6W alloy was designed. The alloy ingot was smelted by the technology of cold crucible suspension melting. After forging, hot rolling, cold rolling and recrystallization annealing, the alloy strip with thickness of 100 渭 m was obtained. The recrystallization texture of the alloy strip was characterized by electron backscattering diffraction (EBSD), and its magnetic and mechanical properties were studied. The results show that Ni-7.8Cr-1.1and Mo-1.6W alloy thin strip has a cubic texture share of 93.444 and a small angle grain boundary volume fraction of 84.5, the Curie temperature of alloy thin strip is 25 KT, which is much lower than 77K, and the yield of alloy strip at room temperature is much lower than 77K. the results show that Ni-7.8Cr-1.1and Mo-1.6W alloy strip after cold rolling and optimized two-step annealing have a cubic texture share of 93.444 and a small angle grain boundary volume fraction of 84.5. The strength is 182 MPA, comparable to Ni-5W alloy, And the tensile performance is very excellent.
【作者单位】：上海大学材料科学与工程学院;上海市高温超导重点实验室;
【基金】：上海市“科技创新行动计划”重大科技项目(11DZ1100303) 上海市高温超导重点实验室项目(14DZ2260700) 上海大学科研培育基金项目
【分类号】：TG146.15

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