Fabrication and mechanical properties of bulk NiTip/Al composites prepared by friction stir processing

被引：92

作者：

Ni, D. R. ^{[1
]}

Wang, J. J. ^{[1
,2
]}

Zhou, Z. N. ^{[2
]}

Ma, Z. Y. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Shenyang Aerosp Univ, Sch Mat Sci & Engn, Shenyang 110136, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 586卷

基金：

中国国家自然科学基金;

关键词：

Friction stir processing; Shape memory alloy; Metal matrix composites; Microstructure; Mechanical properties; SHAPE-MEMORY ALLOYS; TRANSFORMATION BEHAVIOR; WELDING PARAMETERS; TENSILE PROPERTIES; PARTICLE-SIZE; IN-SITU; AL; MICROSTRUCTURE; SURFACE;

D O I：

10.1016/j.jallcom.2013.10.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Friction stir processing (FSP) was used to prepare NiTip reinforced 6061Al bulk composites with the aim to avoid deleterious Al-NiTi interface reaction occurred in cast and powder metallurgy processes. NiTip were homogeneously distributed in the Al matrix without interfacial reaction. The intrinsic characteristic of a reversible thermoelastic phase transformation of the NiTip was observed in the composites. The as-FSP composites showed lower tensile strengths and higher elongation than the as-received 6061Al-T651, and the strengths increased greatly after both aging and T6 heat treatments without interfacial products being detected. The results show that FSP is an effective way to produce NiTip/Al composites with good shape memory effect and mechanical properties. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：368 / 374

页数：7

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