Phase transformation of biomedical metastable β Titanium alloy during aging

Aihong Guo, Wenfang Cui, Izhou Wu, Xianghong Liu, Lian Zhou

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

A kind of metastable β type Ti-30Nb-13Zr-0.5Fe (wt.%) alloy for biomedical application was newly designed and developed. In order to exam the phase transformation during aging and its effects on the mechanical properties, the alloy was β solubilized and aged at 350°C - 550°C for 4 hours. The microstructures were observed by OM and TEM, and the phase structures were identified by XRD. The tensile tests were performed with various aged microstructures. The results show that a lot of ω phase precipitates during aging at 350°C, leading to the increase of strength and elastic modulus and drastic decrease of plasticity. Aging at 450°C, dot α phase uniformly precipitates from metastable β phase. The good combination of high strength, high plasticity and low elastic modulus was obtained under this aging condition. With increasing aging temperature and aging time α precipitations coarsen and precipitation free zones (PFZ) along prior β grain boundaries form, which are the main reasons to lower the strength and plasticity.

源语言英语
主期刊名Materials Research
编辑Zhongwei Gu, Zhongwei Gu, Zhongwei Gu, Yafang Han, Yafang Han, Yafang Han, Fusheng Pan, Fusheng Pan, Fusheng Pan, Fusheng Pan, Fusheng Pan, Fusheng Pan, Xitao Wang, Xitao Wang, Xitao Wang, Duan Weng, Duan Weng, Duan Weng, Shaoxiong Zhou, Shaoxiong Zhou, Shaoxiong Zhou
出版商Trans Tech Publications Ltd
1168-1173
页数6
ISBN(印刷版)9780878493401, 9780878493401, 9780878493401
DOI
出版状态已出版 - 2009
已对外发布
活动MRS International Materials Research Conference, IMRC 2008 - Chongqing, 中国
期限: 9 6月 200812 6月 2008

出版系列

姓名Materials Science Forum
610-613
ISSN(印刷版)0255-5476
ISSN(电子版)1662-9752

会议

会议MRS International Materials Research Conference, IMRC 2008
国家/地区中国
Chongqing
时期9/06/0812/06/08

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