热等静压钛合金与低碳钢包套间的界面反应层研究  

Study on Interfacial Reaction Layer Between HIPed Titanium Alloy and Low Carbon Steel Capsule

作　　者：鲍诗璐 卢正冠 徐磊[1] 马英杰[1] Bao Shilu;Lu Zhengguan;Xu Lei;Ma Yingjie(Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China)

机构地区：[1]中国科学院金属研究所,辽宁沈阳110016 [2]中国科学技术大学材料科学与工程学院,辽宁沈阳110016

出　　处：《稀有金属材料与工程》2021年第7期2599-2606,共8页Rare Metal Materials and Engineering

摘　　要：采用预合金粉末热等静压(hotisostaticpressing,HIP)近净成形工艺制备了一种新型高强韧钛合金,研究了钛合金与低碳钢包套的界面反应。结果表明,钛合金与低碳钢包套之间存在波浪状的界面反应层,其厚度为8μm,钛合金中的合金元素Al、Mo和V向低碳钢中发生了一定程度的扩散,而2种材料的基体元素Ti和Fe发生扩散的程度要明显低于前者;通过选择性化学洗可以将包套去除,并将反应层厚度减小2.5μm,但微观上仍存在波浪状反应层;通过后续的喷砂处理可以进一步减小反应层厚度,并且使界面反应层平直。A new type of high strength and toughness powder titanium alloy used for marine was prepared by hot isostatic pressing(HIP) near net forming process using pre-alloyed powder. The interface reaction between titanium alloy and low carbon steel capsule was studied. Results show that there is a wavy interface between titanium alloy and low carbon steel capsule and the thickness of interfacial reaction layer is 8 μm. Alloying elements Al, Mo and V in titanium alloy diffuse into low carbon steel to a certain extent, while matrix elements Ti and Fe of the two materials diffuse significantly less than the former. After selective chemical washing, the capsule is removed, and the thickness of interfacial reaction layer is reduced by 2.5 μm, but the interface is still wavy. Subsequent sand blast could not only reduce the thickness of the interfacial reaction layer, but also make the interface flat.

关 键 词：钛合金 低碳钢包套 热等静压 界面反应 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TF124.32[金属学及工艺—金属材料]