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

Chengqian Lu; Delun Gong; Yandi Jia; Yuxiang Zhang; Yingying Shen; Wentao Hou; Na Ma; Zengqian Liu; Rui Yang; Yulin Hao

doi:10.1080/21663831.2024.2396030

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

Original Report | 更新时间：2026-08-19

- Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy
- Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy
- 材料研究快报（英文） 2024年12卷第12期页码：877-885
- 作者机构：
  
  1. a Shi-Changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences Shenyang People’s Republic of China
  2. b School of Materials Science and Engineering University of Science and Technology of China
  3. a Shi-Changxu Innovation Center for Advanced Materials Institute of Metal Research Chinese Academy of Sciences
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2024.2396030
  中图分类号：
- 网络首发：2024-09-04，
  
  纸质出版：2024
- 稿件说明：
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Chengqian Lu, Delun Gong, Yandi Jia, 等. Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy[J]. 材料研究快报（英文）, 2024,12(12):877-885.

Chengqian Lu, Delun Gong, Yandi Jia, et al. Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy[J]. Materials Research Letters, 2024, 12(12): 877-885.
Chengqian Lu, Delun Gong, Yandi Jia, 等. Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy[J]. 材料研究快报（英文）, 2024,12(12):877-885. DOI： 10.1080/21663831.2024.2396030.

Chengqian Lu, Delun Gong, Yandi Jia, et al. Achieving Elinvar effect over a wide temperature range in an additively manufactured titanium alloy[J]. Materials Research Letters, 2024, 12(12): 877-885. DOI： 10.1080/21663831.2024.2396030.

摘要

Abstract

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 α″+β dual-phase microstructure wherein both the elastic modulus and transition strain of the α″ phase increase monotonically with increasing temperature. The α″ 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.

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