稀土元素Y对TC4钛合金力学性能的影响  

Effect of Rare Earth Element Y on Mechanical Properties of TC4 Titanium Alloy

作　　者：王济生 WANG Jisheng(Henan Zhongyuan Heavy Forging Co.,Ltd.,Jiyuan 454650,China)

机构地区：[1]河南中原重型锻压有限公司,河南济源454650

出　　处：《材料开发与应用》2023年第1期42-47,共6页Development and Application of Materials

摘　　要：为探讨稀土元素Y对TC4钛合金力学性能的影响,熔炼制备出稀土元素Y含量(质量分数)为0.3%、0.6%、0.9%的TC4-Y钛合金,然后分别检测TC4-Y钛合金的致密度、硬度、室温拉伸性能及高温拉伸性能。结果表明,随着Y元素含量的升高,合金的致密度、硬度、强度及塑性先升高后降低。当Y含量为0.3%时,TC4钛合金的硬度最高;当Y含量为0.6%时,TC4钛合金的致密度最高,强度及塑性最好。在钛合金中加入稀土元素Y后,钛合金的晶粒尺寸迅速降低。综合考虑,当稀土元素Y的含量为0.6%时,TC4钛合金的力学性能最佳。In order to investigate the effect of different contents of rare earth element Y on the mechanical properties of titanium alloy TC4,TC4-Y titanium alloys with rare earth element Y contents of 0.3%,0.6%and 0.9%are prepared by smelting technology.Then the density,hardness,tensile properties at room and high temperatures of TC4-Y titanium alloys are tested.The results show that the mechanical properties of TC4 titanium alloy are improved by adding rare earth Y.With the increase of Y element content,the density,hardness,strength and plasticity of the alloy increase first and then decrease.When the Y content is 0.3%,the hardness of TC4 titanium alloy is the highest.When the Y content is 0.6%,TC4 titanium alloy has the highest density and the best strength and plasticity.The grain size of TC4 titanium alloy decreases rapidly when Y is added.When the addition of Y is 0.6%,the mechanical properties of TC4 titanium alloy are the best.

关 键 词：稀土元素 钇 TC4钛合金 力学性能 

分 类 号：TG456.7[金属学及工艺—焊接]