TC4钛合金热轧过程中组织演变和性能控制机理研究及展望  

Research and prospect on mechanism of tissue evolution and property control of TC4 titanium alloy during hot rolling process

作　　者：王美晨 储双杰[1,2] 梁高飞 张启飞 赵海燕 毛博[1] WANG Mei-chen;CHU Shuang-jie;LIANG Gao-fei;ZHANG Qi-fei;ZHAO Hai-yan;MAO Bo(School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Baoshan Iron&Steel Co.,Ltd.,Shanghai 201900,China;Baowu Special Metallurgy Co.,Ltd.,Shanghai 200940,China)

机构地区：[1]上海交通大学材料科学与工程学院,上海200240 [2]宝山钢铁股份有限公司,上海201900 [3]宝武特种冶金有限公司,上海200940

出　　处：《塑性工程学报》2024年第9期1-22,共22页Journal of Plasticity Engineering

基　　金：国家重点研发计划(2022YFB3705603);上海市科技创新行动计划(22SQB00600)。

摘　　要：以TC4钛合金为研究对象,首先基于轧件特点,将TC4钛合金产品分为板带箔材和管棒材,归纳了这些产品常见的加工技术;综合评述了晶粒细化、织构演变和相组分再分配等行为对TC4钛合金微观组织的影响;通过总结不同的热轧温度及变形量等轧制工艺对TC4钛合金组织的影响,评估了性能、组织匹配性较好的相关参数;围绕TC4钛合金板材在热轧过程中出现的轧制变形不均匀、裂纹和塑性流动失稳等缺陷,阐述了这些缺陷的形成机理;考虑到数值模拟在钛合金热加工成形时的重要作用,分析了TC4钛合金不同尺度下数值模拟特点;展望了TC4钛合金热轧工艺及技术的发展方向。Taking TC4 titanium alloy as the research object.Firstly,based on the characteristics of rolled parts,TC4 titanium alloy products were categorized into sheet/strip/foil materials and pipe/rod materials,and common processing techniques for these products were summarized.The effects of behaviors such as grain refinement,texture evolution and phase component redistribution on the microstructure of TC4 titanium alloy were comprehensive reviewed.By summarizing the effect of different hot rolling temperatures and deformation amounts on the microstructure of TC4 titanium alloy,the relevant parameters that exhibit good performance and microstructure compatibility were evaluated.Regarding the defects observed during the hot rolling of TC4 titanium alloy sheets,such as uneven deformation,cracking and instability in plastic flow,the mechanisms behind the formation of these defects were elucidated.Considering the significant role of numerical simulations in the thermal process forming of titanium alloys,the characteristics of numerical simulations for TC4 titanium alloy at different scales were analyzed.The development directions of hot rolling process and technology for TC4 titanium alloy were concluded.

关 键 词：TC4钛合金 热轧 组织演变 工艺参数 缺陷 数值模拟 

分 类 号：TG319[金属学及工艺—金属压力加工]