铍钛合金的制备及组织性能研究  

Study on Preparation of Be-Ti Alloys and their Microstructure and Properties

作　　者：彭仕先 王晶[2] 赵福泽 张新建[2] PENG Shi-xian;WANG Jing;ZHAO Fu-ze;ZHANG Xin-jian(Science and Technology on Surface Physics and Chemistry Laboratory,Mianyang 621907,China;Institute of Materials,China Academy of Engineering Physics,Mianyang 621907,China)

机构地区：[1]表面物理与化学重点实验室,四川绵阳621907 [2]中国工程物理研究院材料研究所,四川绵阳621907

出　　处：《稀有金属与硬质合金》2022年第2期70-74,共5页Rare Metals and Cemented Carbides

基　　金：ITER项目(2015GB109000)。

摘　　要：采用电弧熔炼和吸铸成形方法制备了Be-16%Ti、Be-24%Ti和Be-30.8%Ti三种成分的合金,对合金相组成、微观组织、显微硬度进行了分析。结果表明:Be-16%Ti和Be-24%Ti合金由Be相和Be_(12)Ti相组成,Be-30.8%Ti合金中除了Be相及Be_(12)Ti相还存在Be_(12)Ti相;随着吸铸成形过程凝固速率的增大,Be-30.8%Ti合金铸件中晶粒尺寸逐渐减小,φ8 mm的Be-30.8%Ti合金铸件中一次枝晶间距达40μm,而φ4 mm铸件中一次枝晶间距约为10μm;随着Ti含量的增加,Be-Ti合金硬度明显增大,Be-30.8%Ti合金显微硬度可达950 HV。Be-16%Ti,Be-24%Ti and Be-30.8%Ti alloys were prepared by arc melting and suction casting.The phase composition,microstructure and microhardness of the alloys were analyzed.The results show that Be-16%Ti and Be-24%Ti alloys are composed of Be phase and Be_(12)Ti phase,and Be-30.8%Ti alloy contains Be_(12)Ti phase in addition to Be phase and Be_(12)Ti phase.With the increase of solidification rate du-ring suction casting,the grain size of Be-30.8%Ti alloy casting gradually decreases.The primary dendrite spacing ofφ8 mm Be-30.8%Ti alloy casting is up to 40μm,while the primary dendrite spacing ofφ4 mm casting is about 10μm.With the increase of Ti content,the hardness of Be-Ti alloys obviously increases,and the microhardness of Be-30.8%Ti alloy can reach 950 HV.

关 键 词：Be-Ti合金 电弧熔炼 吸铸 显微组织 硬度 

分 类 号：TG146.24[一般工业技术—材料科学与工程]