Microstructural evolution of martensite during deformation in Zr50Cu50 shape memory alloy

被引：41

作者：

Gao, Weihong ^{[1
,2
]}

Yi, Xiaoyang ^{[1
]}

Sun, Bin ^{[1
]}

Meng, Xianglong ^{[1
]}

Cai, Wei ^{[1
]}

Zhao, Liancheng ^{[1
]}

机构：

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

[2] Guangdong Univ Technol, Guangzhou 510006, Guangdong, Peoples R China

来源：

ACTA MATERIALIA | 2017年 / 132卷

关键词：

Shape memory alloys; Zr50Cu50; alloy; Martensite; Deformation microstructure; Transmission electron microscopy; MECHANICAL-PROPERTIES; CUZR MARTENSITE; TWINNED DOMAIN; TRANSFORMATION; INTERFACE; BEHAVIOR; PHASE; ZR; 1ST-PRINCIPLES; SUBSTRUCTURE;

D O I：

10.1016/j.actamat.2017.04.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructural evolution of deformed martensite in the Zr50Cu50 shape memory alloy was studied by transmission electron microscopy (TEM) and the deformation mechanism was finally clarified. Before deformation, the intervariants in the Zr50Cu50 alloy showed a (021) type I twinrelationship, and the dominant substructures inside the martensite variant were (001) compound twins. Distinct deformation mechanisms were observed at different deformation stages. Detwinning of the (001) compound twins was the dominant mechanism during the primary stage. As the compressive strain increased, the detwinning zone expanded, but did not result in complete detwinning. At higher strain levels, stress induced the formation of many (021) and (20 (1) over bar) nanoscale deformation twins, originating from 1/10[012] partial dislocations; this was considered to be the dominant deformation mechanism. The irrecoverable strain was closely associated with crossed (021) and (20 (1) over bar) deformation twins that limited the mobility of martensite during heating. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：405 / 415

页数：11

共 37 条

[1] Interface structure and mobility in martensitic shape memory alloys [J].

Cai, W. ;

Meng, X. L. ;

Zheng, Y. F. ;

Zhang, J. X. ;

Zhao, L. C. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 438 :900-904

[2] Interface mobility in M49.8Ti42.2Hf8 shape memory alloy [J].

Dalle, F ;

Perrin, E ;

Vermaut, P ;

Masse, M ;

Portier, R .

ACTA MATERIALIA, 2002, 50 (14) :3557-3565

[3] High temperature shape memory alloys problems and prospects [J].

Firstov, G. S. ;

Van Humbeeck, J. ;

Koval, Yu. N. .

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 2006, 17 (12) :1041-1047

[4] Comparison of high temperature shape memory behaviour for ZrCu-based, Ti-Ni-Zr and Ti-Ni-Hf alloys [J].

Firstov, GS ;

Van Humbeeck, J ;

Koval, YN .

SCRIPTA MATERIALIA, 2004, 50 (02) :243-248

[5] High-temperature shape memory alloys some recent developments [J].

Firstov, GS ;

Van Humbeeck, J ;

Koval, Y .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2) :2-10

[6] Stress-Induced Martensitic Transformation of Zr50Cu25Ni10Co15 Nanocrystals Embedded in an Amorphous Matrix [J].

Gao, W. H. ;

Yi, X. Y. ;

Meng, X. L. ;

Song, G. ;

Cai, W. ;

Zhao, L. C. .

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2017, 33 (03) :276-280

[7] Effect of Hf content on martensitic transformation, microstructure, and mechanical properties of Cu50Zr50-xHfx alloys [J].

Gao, W. H. ;

Meng, X. L. ;

Song, G. B. ;

Cai, W. ;

Zhao, L. C. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 662 :578-582

[8] Martensite structure and phase transformation of quaternary ZrCuAlCo high temperature shape memory alloys [J].

Gao, W. H. ;

Meng, X. L. ;

Cai, W. ;

Zhao, L. C. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 607 :99-103

[9] MARTENSITIC-TRANSFORMATION AND SHAPE MEMORY EFFECT IN ZRCU INTERMETALLIC COMPOUND [J].

KOVAL, YN ;

FIRSTOV, GS ;

KOTKO, AV .

SCRIPTA METALLURGICA ET MATERIALIA, 1992, 27 (11) :1611-1616

[10] CRYSTAL-STRUCTURE OF THE MARTENSITE IN TI-49.2 AT-PERCENT-NI ALLOY ANALYZED BY THE SINGLE-CRYSTAL X-RAY-DIFFRACTION METHOD [J].

KUDOH, Y ;

TOKONAMI, M ;

MIYAZAKI, S ;

OTSUKA, K .

ACTA METALLURGICA, 1985, 33 (11) :2049-2056

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