TC17钛合金超大规格棒材的制备  

Preparation of the Large Size TC17 Titanium Alloy Bar

作　　者：王凯旋[1] 冯贞伟[2] 丁永峰[1] 王玮东[1] 陈小苗[1] 刘向宏[1] 

机构地区：[1]西部超导材料科技股份有限公司,陕西西安710018 [2]中国人民解放军驻沈阳黎明发动机制造公司军事代表室,辽宁沈阳110043

出　　处：《钛工业进展》2014年第5期32-35,共4页Titanium Industry Progress

摘　　要：以0级海绵钛、Al-Mo二元中间合金以及适当颗粒度的金属Cr等为原料,经过3次真空自耗电弧炉熔炼得到5 t级TC17钛合金铸锭。铸锭杂质元素含量较小,纯净度良好,合金元素成分的纵横向分布均匀性良好,易偏析元素Cr的纵、横向分布偏差不大于0.35%。铸锭在4 500 t快锻机上经"高低高低"路线的反复镦拔锻造制备成500mm棒材,棒材的低倍组织、显微组织、高温和室温力学性能以及超声波探伤水平等各项技术指标均符合相关技术标准要求,不同部位的组织均匀性、性能一致性良好。The main elements were added to TC17 titanium alloy in the form of high-quality sponge titanium and complex intermediate alloy.The chemical composition of TC17 titanium alloy ingot produced by triple vacuum arc remelting （VAR） process can meet the requirement of specification and well purity.The main alloy element in TC17 titanium alloy ingot had well composition homogeneity,and cmposition deviation of Cr in longitudinal and transverse direction of TC17 titanium alloy ingot was not more than 0.35％.The ingot was bloomed and forged through ＂HLHL＂ process by 4 500 t high speed forging press,and finally the bar with the diameter of 500 mm was got.The microstructures,mechanical properties at room and high temperature and ultrasonic test result can all accord with the requirement of the standard.

关 键 词：TC17钛合金 棒材 组织 性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程]