High damping performances over wide temperature range in the B doped Ti-Ni shape memory alloys

被引：5

作者：

Li, Jun ^{[1
]}

Sun, Kuishan ^{[2
]}

Li, Xinhang ^{[2
]}

Meng, Xianglong ^{[2
]}

Cai, Wei ^{[2
]}

机构：

[1] Northeast Forestry Univ, Coll Mech & Elect Engn, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

MATERIALS LETTERS | 2023年 / 330卷

基金：

中国国家自然科学基金;

关键词：

Phase transformation; Microstructure; Ti-Ni-B; Internal friction; INTERNAL-FRICTION; PHASE;

D O I：

10.1016/j.matlet.2022.133245

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In present work, the microstructure, martensitic transformation behavior and damping properties of the B doped Ti-Ni shape memory alloys were investigated. The B2 parent phase and B19 ' martensite phase are both detected in the whole samples, irrespective of B contents. In addition, the TiB whiskers are observed in the alloy with high boron contents. The martensitic transformation temperatures increase firstly and then decreases with the increasing of the B contents. The Ti-Ni alloys with B addition exhibit two high internal friction peaks, which are derived from the B2 4-* B19 ' martensitic transformation and interactions between boron and twinning boundaries, respectively. The tan8 of low temperature relaxation peak can be up to approximately 0.074 in the alloy with 0.7 at.% B contents. The introduction of proper interstitial atoms is considered as promising method to improve the damping performances.

引用

页数：3

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