Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy

被引：0

作者：

Lu, Chengqian ^{[1
,2
]}

Gong, Delun ^{[1
]}

Jia, Yandi ^{[1
,2
]}

Zhang, Yuxiang ^{[1
,2
]}

Shen, Yingying ^{[1
]}

Hou, Wentao ^{[1
]}

Ma, Na ^{[1
]}

Liu, Zengqian ^{[1
]}

Yang, Rui ^{[1
]}

Hao, Yulin ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China

来源：

MATERIALS RESEARCH LETTERS | 2024年 / 12卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Additive manufacturing; electron beam melting; TiNb-based alloy; Elinvar effect; ELECTRON-BEAM; THERMAL-EXPANSION; MICROSTRUCTURE; PROPERTY;

D O I：

10.1080/21663831.2024.2396030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Temperature-insensitive elastic modulus known as Elinvar effect is typically achievable in metastable titanium alloys only through thermomechanical processing. Here reports that a directly additively manufactured TiNb-based alloy exhibits Elinvar effect over a wide temperature range of 273 K. This is attributed to its alpha ''+beta dual-phase microstructure wherein both the elastic modulus and transition strain of the alpha '' phase increase monotonically with increasing temperature. The alpha '' phase was obtained by setting a base-plate temperature of 723 K to act as in-situ aging. This provides a new way to optimize mechanical and functional properties simultaneously by utilizing thermal fields of additive manufacturing. GRAPHICAL ABSTRACT

引用

页码：877 / 885

页数：9

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