轧制钼材制备过程织构演变的研究现状  

Research Status of Texture Evolution of As⁃rolled Molybdenum in Preparation Process

作　　者：李艳 周增林 何学良[1] 陈文帅 惠志林 LI Yan;ZHOU Zenglin;HE Xueliang;CHEN Wenshuai;HUI Zhilin(GRIMAT Engineering Institute Co.,Ltd.,Beijing 101407,China;State Key Laboratory of Advanced Materials for Smart Sensing,GRINM Group Corporation Limited,Beijing 100088,China;General Research Institute for Nonferrous Metals,Beijing 100088,China)

机构地区：[1]有研工程技术研究院有限公司,北京101407 [2]有研科技集团有限公司智能传感功能材料国家重点实验室,北京100088 [3]北京有色金属研究总院,北京100088

出　　处：《材料导报》2022年第12期139-144,共6页Materials Reports

基　　金：国家重点研发计划专项项目(2017YFB0306000)。

摘　　要：相对于钼合金,纯钼轧制板带箔材的应用性能改善途径更多地集中于原料纯度提高及显微组织结构优化,其中因烧结、轧制及退火过程中晶粒取向择优分布而形成的织构是不可忽略的重要因素。尽管近年来X射线衍射、电子背散射衍射等织构分析技术的进步为更深入研究钼材织构形成和演变提供了充分的支持,但是相关研究往往局限于某一特定状态或阶段(如热轧、冷轧或退火等)的钼材的织构情况,对钼材织构在整个制备过程中的演变行为尚缺少系统总结。纯钼薄板的轧制和初始再结晶织构为典型的无杂质体心立方金属织构,主要包括以{001}〈110〉、{112}〈110〉为代表的α线织构和以{111}〈110〉、{111}〈112〉为代表的γ线织构等组分;其形成经历了从烧结钼坯的〈100〉∥ND、〈110〉∥ND、〈112〉∥ND或〈113〉∥ND织构,到轧制过程中主织构成分{001}〈110〉或{112}〈110〉以及γ线织构的逐渐生成和增强,再到部分再结晶时的主织构强化、{111}〈110〉基本不变、{111}〈112〉弱化,最后到完全再结晶时织构主成分从{112}〈110〉到{113}〈110〉、{001}〈110〉的演变历程。从轧制钼材织构的分析表征手段入手,本文循着制备工艺路线梳理了钼材轧制及退火过程中织构的演变轨迹,旨在总结近年来国内外有关轧制钼材制备过程织构演变的研究工作,并归纳钼材与低碳钢等工业应用更广泛、研究更深入的BCC金属织构及演变规律的异同,以供参考。Compared with molybdenum alloys,the improvement of application performance of pure molybdenum rolled sheet,strip and foil is more focused on improving the purity of raw materials and optimizing the microstructure.In view of this,the texture formed by the preferential distribution of grain orientation during sintering,rolling and annealing process,should be paid more attention.While recent advances in texture analysis techniques,such as X⁃ray diffraction and electron backscatter diffraction,have provided sufficient support for more in⁃depth understanding on texture,relevant research of molybdenum texture is confined to texture state in a certain status,such as hot rolling,cold rolling or annealing.The literature on texture evolution of molybdenum materials in entire rolling and heat treatment process has not yet been published.The rolling and primary⁃recrystallizated texture of pure molybdenum sheet present typical texture components of impurity⁃free body⁃centered cubic metals,mainly includingα⁃fiber components,such as{001}〈110〉and{112}〈110〉,andγ⁃fiber ones,such as{111}〈110〉and{111}〈112〉.Their formation has evolved as the following sequences:the existence of〈100〉∥ND,〈110〉∥ND,〈112〉∥ND or〈113〉∥ND texture in sintered molybdenum billet;the formation and enhancement of main texture components,{001}〈110〉or{112}〈110〉,andγ⁃fiber ones during rolling process;enhanced{001}〈110〉or{112}〈110〉,unchanged{111}〈110〉and weakened{111}〈112〉during partial recrystallization;the change of main texture components from{112}〈110〉to{113}〈110〉and{001}〈110〉through full recrystallization.Based on the comparation of XRD and EBSD,this paper depicted the texture development of molybdenum material along the processing route for summarizing the relevant research work.In addition,the texture evolution of molybdenum was also compared with that of low carbon steel,which is also one of the most deeply researched BCC metals.This paper aims to provide a better u

关 键 词：钼 织构演变 轧制 再结晶 

分 类 号：TG146.412[一般工业技术—材料科学与工程]