Microstructure Evolution of a New Biomedical Titanium Alloy with Aging Treatment

Wang Chunjian; Jiang Yehua; Zhou Rongfeng; Zhou Rong; Tao Shan

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Microstructure Evolution of a New Biomedical Titanium Alloy with Aging Treatment
Issue 10, Pages: 816-818(2007)
Published： 2007 ，
DOI：

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[1]王春建,蒋业华,周荣锋,周荣,陶姗.新型生物钛合金时效处理组织演变[J].特种铸造及有色合金,2007(10):816-818+738.

Wang Chunjian, Jiang Yehua, Zhou Rongfeng, et al. Microstructure Evolution of a New Biomedical Titanium Alloy with Aging Treatment. [J]. Special Casting & Nonferrous Alloys (10):816-818(2007)
[1]王春建,蒋业华,周荣锋,周荣,陶姗.新型生物钛合金时效处理组织演变[J].特种铸造及有色合金,2007(10):816-818+738. DOI：

Wang Chunjian, Jiang Yehua, Zhou Rongfeng, et al. Microstructure Evolution of a New Biomedical Titanium Alloy with Aging Treatment. [J]. Special Casting & Nonferrous Alloys (10):816-818(2007) DOI：

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。

Abstract

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.