钛合金铸造缩孔热变形演变规律研究  

作　　者：刘继雄[1,2] 张伟[1] 乔璐[1] 张平辉[1] 王鼎春[1] 高颀[2] 

机构地区：[1]宝鸡钛业股份有限公司,陕西宝鸡721014 [2]宝钛集团有限公司,陕西宝鸡721014

出　　处：《科技创新与应用》2020年第2期64-65,67,共3页Technology Innovation and Application

摘　　要：文章主要利用真空自耗电弧炉、气锤、光学显微镜、扫描电子显微镜等加工和分析设备,研究了TC4钛合金铸造过程中形成的缩孔,在锻造过程中形状、大小等特征的演变规律。结果表明,钛合金铸造凝固过程中,在顶端形成缩孔;随热变形量的增加,铸造缩孔局部界面愈合在一起,缩孔尺寸减小,最终消失。In this paper,vacuum consumable arc furnace,air hammer,optical microscope,scanning electron microscope and oth-er processing and analysis equipment are used to study the evolution of the shrinkage cavity formed in the casting process and the shape and size of TC4 titanium alloy in the forging process.The results show that the shrinkage cavity is formed at the top of the titanium alloy during casting solidification,and the local interface of the casting shrinkage cavity heals together with the increase of thermal deformation,and the shrinkage size decreases and finally disappears.

关 键 词：钛合金 铸造 缩孔 热变形 

分 类 号：TG146[一般工业技术—材料科学与工程]