Effects of cross rolling on texture,mechanical properties and anisotropy of pure Mo plates  

交叉轧制对纯钼板织构、力学性能及各向异性的影响

作　　者：De-zhi WANG Yao-xin JI Zhuang-zhi WU 王德志;姬耀鑫;吴壮志(中南大学材料科学与工程学院,长沙410083;中南大学有色金属材料科学与工程教育部重点实验室,长沙410083)

机构地区：[1]School of Materials Science and Engineering,Central South University,Changsha 410083,China [2]Key Laboratory of Ministry of Education for Non-ferrous Materials Science and Engineering,Central South University,Changsha 410083,China

出　　处：《Transactions of Nonferrous Metals Society of China》2020年第8期2170-2176,共7页中国有色金属学报（英文版）

基　　金：Project(2017YFB0306001)supported by the National Key R&D Program of China;Project(502221802)supported by the Innovation-Driven Project of Central South University,China。

摘　　要：To clarify the influence of the deformation texture on the mechanical properties,pure Mo plates were processed by various cross rolling procedures,and the relation among texture,microstructure and mechanical properties was discussed.The results show that cross rolling of the Mo plates is beneficial for the formation of the rotated cube component,i.e.,{001}<110>.The corresponding orientation density exhibits a positive correlation with the total rolling deformation and the current-pass deformation.When the total deformation is 96%or greater,the Mo plates form a texture orientation dominated by{001}<110>,whereas theγ-fibre texture becomes weaker and the cube texture{100}<100>disappears completely.The presence of{001}<110>has great effects on the properties of cross-rolled Mo plates,which is beneficial for strength enhancement and plasticity reduction in both the rolling direction(RD)and the transverse direction(TD).为了研究变形织构对力学性能的影响,对纯钼板进行不同工艺的交叉轧制,然后表征所得钼板的织构、力学性能和显微组织。结果表明:交叉轧制有利于钼板形成旋转立方织构,即{001}<110>织构,其取向密度随着轧制总变形量和当前道次变形量的增大而增大;当轧制总变形量达到96%或更高时,钼板会形成以{001}<110>织构为主导的晶粒取向,而纤维织构变弱,同时立方织构{001}<100>完全消失。{001}<110>织构的存在有利于交叉轧制钼板轧制方向和垂直轧制方向的强度提高和塑性降低。

关 键 词：Mo plates cross rolling tensile strength TEXTURE ANISOTROPY 

分 类 号：TG335.19[金属学及工艺—金属压力加工] TG146.412[一般工业技术—材料科学与工程]