Ag元素对Ni-7at.%W合金基带织构形成的影响  

Effect of silver on texture formation of Ni-7at.%W alloy substrates

作　　者：高忙忙[1] 苏圣尧 张方圆 赵旭 马麟[2] 索红莉[2] GAO Mang-mang;SU Sheng-yao;ZHANG Fang-yuan;ZHAO Xu;MA Lin;SUO Hong-li(Key Laboratory of Photovoltaic Materials, Ningxia University, Yinchuan 750021, China;College of Materials Science and Technology, Beijing Univ. of Tech., Beijing 100124, China)

机构地区：[1]宁夏大学光伏材料重点实验室,宁夏银川750021 [2]北京工业大学材料科学与工程学院,北京100124

出　　处：《兰州理工大学学报》2021年第1期5-10,共6页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51501096)。

摘　　要：Ag元素能够使Ni和Ni-5at.%W合金基带中的晶粒形貌呈细长状,从而提升超导层电流的传输能力.研究了Ag在高W含量的NiW合金基带(>5at.%W)中对织构的影响机制,为后续调控晶粒形貌打下基础.研究表明:Ag使基带中S取向的体积分数降低,进而影响了再结晶后基带中立方晶体型织构的形成.通过在轧制变形量为90%时引入550℃保温2 h的中间热处理,可以使冷轧基带的形变因子R由0.72提升至1.05,从而增加铜型织构的体积分数,并使得基带中形变后的立方晶体的取向增大65%.最终,经过再结晶热处理获得了表面立方晶体型织构的体积分数为96.8%的Ni-7at.%W-0.01at.%Ag合金基带.The Ag element can make grains in the substrates of Ni and Ni-5at.%W alloy elongated so as to improve the current transmission ability of superconducting layer.The mechanism of Ag effect on texture of NiW substrates with high W content(>5at.%W)may be the basis for subsequent control of grain structure morphology.The results show that the presence of Ag decreases volume fraction of S-orientation in substrate,which further affects the formation of cubic crystal texture in the baseband after recrystallization.By introducing intermediate heat treatment at 550℃for 2 h as the rolling deformation reaches about 90%,the deformation factor R of cold rolled baseband can be increased from 0.72 to 1.05,thus increasing the volume fraction of copper texture and increasing the orientation of deformed cubic crystals in the baseband by 65%.Finally,the alloy baseband with a volume fraction of 96.8%Ni-7at.%W-0.01at.%Ag with cubic crystal texture on the surface can be obtained after recrystallization in the heat treatment.

关 键 词：涂层导体 Ni7W合金基带 织构 Ag元素 

分 类 号：TG132.26[一般工业技术—材料科学与工程]