Indexed by:期刊论文

First Author:马仁涛

Correspondence Author:Wang, Q (reprint author), Dalian Univ Technol, Minist Educ, Key Lab Mat Modificat, Dalian 116024, Peoples R China.

Co-author:郝传璞,王清,任明法,王英敏,董闯

Date of Publication:2010-09-11

Journal:金属学报

Included Journals:SCIE、EI、PKU、ISTIC、CSCD、Scopus

Document Type:J

Volume:46

Issue:09

Page Number:1034-1040

ISSN No.:0412-1961

Key Words:Ti-Mo-Nb-Zr合金;β-Ti固溶体;“团簇+连接原子”结构模型;成分设计;低弹性模量

Abstract:利用"团簇+连接原子"结构模型研究了典型低弹bccβ-Ti固溶体合金的成分特征.对现有低弹β-Ti固溶体合金的成分分析表明它们均满足团簇式[CN14团簇](连接原子)_x.根据该式,设计了Ti-Mo-Nb-Zr系列合金[MoTi_(14)]Ti(质量分数表达时为Ti-11.8Mo),[MoTi_(14)]Nb(Ti-11.2Mo-10.8Nb),[MoTi_(14)]Nb_2(Ti-10.1Mo-19.5Nb)和[Mo(Ti_(13)Zr)]Nb_2(Ti-9.2Zr-9.6Mo-18.7Nb),并采用Cu模吸铸快冷技术制备直径为3和6 mm的合金棒.结果表明,吸铸制备的合金均为bcc结构;当连接原子由Ti变成更低弹的Nb时,合金弹性模量降低;低弹Zr替代Ti进一步降低了合金的弹性模量,[Mo(Ti_(13)Zr)]Nb_2合金的弹性模量E=72 GPa.铸态样品经过固溶和水淬处理后弹性模量降低.

Translation or Not:no