Superelastic behavior of single crystalline Ni48Fe20Co5Ga27 micro-pillars near austenite-martensite critical point

被引：7

作者：

Chang, T-F M. ^{[1
]}

Chernenko, V ^{[1
,2
,3
,4
]}

Tang, H-C ^{[1
]}

Chen, C-Y ^{[1
]}

Umise, A. ^{[1
,5
]}

Tahara, M. ^{[1
]}

Hosoda, H. ^{[1
]}

Sone, M. ^{[1
]}

机构：

[1] Tokyo Inst Technol, Inst Innovat Res, Midori Ku 4259, Yokohama, Kanagawa 2268503, Japan

[2] BCMaterials, Bilbao 48080, Spain

[3] Univ Basque Country, UPV EHU, Bilbao 48080, Spain

[4] Ikerbasque, Basque Fdn Sci, Bilbao 48009, Spain

[5] Tokyo Med & Dent Univ, Inst Biomat & Bioengn, Bunkyo Ku, 1-5-45 Yushima, Tokyo 1010062, Japan

来源：

AIP ADVANCES | 2021年 / 11卷 / 02期

关键词：

All Open Access;

D O I：

10.1063/5.0036304

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Micro-pillars oriented in austenite along [100], [110], and [111] crystallographic directions were fabricated on the corresponding edges of a single crystalline plate of the Ni48Fe20Co5Ga27 magnetic shape memory alloy exhibiting martensitic transformation (MT) at 150 K. Superelastic behavior of pillars, due to micro-compression-induced MT, was investigated at different temperatures from 298 K to 373 K. At room temperature, Young's moduli of the [100], [110], and [111] pillars in austenite are equal to 5.3 GPa, 7.9 GPa, and 9.9 GPa, respectively, resulting in the linear dependences of the elastic strain reaching up to the record-breaking value of 10%. On increasing temperature, the stress-strain dependencies exhibit changes that are interpreted in terms of the critical behavior on approaching to the end points on the martensite-austenite stress-temperature phase diagrams.

引用

页数：4

共 20 条

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