熔炼方式对TC17钛合金铸锭化学成分及棒材组织均匀性的影响研究  

Effect of Melting Method on Chemical Composition and Microstructure Homogeneity of TC17 Titanium Alloy Ingots and Bars

作　　者：岳旭[1,2] 杨国庆[1] 李渭清[1] 乔璐[1] 马宝军[3] 张平辉[3] 何书林[3] 贾栓孝[1] Yue Xu Yang Guoqing Li Weiqing Qiao Lu Ma Baojun Zhang Pinghui He Shulin Jia Shuanxiao(Baoji Titanium Industry Co., Ltd., Baoji 721014, China Baoti Group Co., Ltd., Baoji 721014, China Xi＇ an Jiaotong University, Xi＇ an 710049, China)

机构地区：[1]宝鸡钛业股份有限公司,陕西宝鸡721014 [2]西安交通大学,陕西西安710049 [3]宝钛集团有限公司,陕西宝鸡721014

出　　处：《钛工业进展》2016年第5期11-15,共5页Titanium Industry Progress

摘　　要：对比分析一次电子束冷床炉熔炼(EBCHM)加一次真空自耗电弧炉熔炼(VAR)和三次真空自耗电弧炉熔炼生产的φ820 mm TC17钛合金铸锭的化学成分均匀性,以及由这两种铸锭经相同工艺锻造得到的棒材的组织均匀性。结果表明,通过原材料控制和工艺参数设计,两种熔炼方式均可生产出化学成分均匀、杂质含量可控的大规格TC17钛合金铸锭,且EBCHM+VAR工艺在残钛回收方面具有优势;两种工艺得到的铸锭,经相同的锻造工艺可获得组织均匀的棒材,为航空转动件提供材料支撑。The chemical composition uniformity of Ф820 mm TC17 titanium alloy ingots produced by single electron beam cold hearth mehing（EBCHM） plus single vacuum arc remelting（VAR） as well as triple vacuum arc remehing were compared, and the microstructure homogeneity of the bars which produced by these two TC17 titanium alloy ingots were also analyzed. It can be found that through the raw materials control and process parameters design, both melting methods can produce large sized TC17 titanium alloy ingots with uniform chemical composition and low impurity content. Furthermore, EBCHM ＋ VAR method has advantage in recovery of residual titanium. The TC17 titanium alloy bars produced by the two ingots both have homogeneous microstructure, and can provide material support for aircraft rotating parts.

关 键 词：TC17钛合金 电子束冷床炉熔炼 真空自耗电弧炉熔炼 化学成分 组织 

分 类 号：TG292[金属学及工艺—铸造] TG319