热处理对TiNbZrMo合金显微组织和力学性能的影响

Effects of Heat Treatment on Microstructure and Mechanical Propertiesof TiNbZrMo Alloy

摘要:

采用水冷铜坩埚真空感应熔炼技术制备了名义成分为Ti-12Nb-12Zr-2Mo的合金,对获得的样品在真空热处理炉中进行热处理。采用x射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)以及力学测试等技术对铸态和热处理后得到样品的显微组织和力学性能进行系统研究。结果表明：铸态和退火状态下合金的组织均为α和β相组成,淬火状态下合金组织由α′和β相组成。热处理有利于提高合金的强度,而不改变合金的弹性模量。

Abstract:

Ti-12Nb-12Zr-2Mo alloy has been prepared by water jacketed copper crucible induction melting furnace. The heat treatment was processed using a vacuum furnace. Microstructure and mechanical properties of as-cast and heat treated alloy were systematic invested using XRD, SEM, TEM and mechanical test. The results show that microstructure of as-cast and annealed alloy were composed of α and β phase, while for quenched alloy was α′ and β phase. Heat treatment is conductive to improve strength and remain elastic modulus the same.