新型生物钛合金时效处理组织演变  

Microstructure Evolution of a New Biomedical Titanium Alloy with Aging Treatment

作　　者：王春建[1] 蒋业华[1] 周荣锋[1] 周荣[1] 陶姗[1] 

机构地区：[1]昆明理工大学机电工程学院

出　　处：《特种铸造及有色合金》2007年第10期816-818,共3页Special Casting & Nonferrous Alloys

摘　　要：真空熔炼制备了新型Ti-29Nb-13Ta-4.6Zr钛合金,研究了450℃时效处理过程中钛合金的组织演变。结果表明,合金固溶处理后的组织为单一过冷亚稳β相;在时效处理过程中亚稳β相逐渐向α相发生转变,形成由晶界处带状α相及紧邻α带的稳定β相,以及晶内弥散分布于α相基体的稳定β相组成的混合组织。The microstructure evolution of a new titanium alloy Ti-29Nb-13Ta-4.6Zr prepared by vacuum casting was observed with aging treatment at 450 ℃. The results reveal that the microstructure in the alloy exhibits single under-cooled metastable β phase after solid solution treatment, while the mixed structure can be created in the alloy, which is composed of stable β phase dispersively distributed on αphase in grain and strip α phase as well as stable β phase adjacent to strip α phase in boundary, due to the transformation of metastable β phase into strip α phase during aging treatment.

关 键 词：生物钛合金 时效处理 组织演变 

分 类 号：TG156.92[金属学及工艺—热处理]