Achieving ultrafine-grained structure in a pure nickel by friction stir processing with additional cooling

被引：43

作者：

Xue, P. ^{[1
]}

Xiao, B. L. ^{[1
]}

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

机构：

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

来源：

MATERIALS & DESIGN | 2014年 / 56卷

基金：

中国国家自然科学基金;

关键词：

HIGH-TENSILE DUCTILITY; MECHANICAL-PROPERTIES; AL-ALLOYS; ALUMINUM; STEEL; CU; STRENGTH; RECRYSTALLIZATION; MICROSTRUCTURE; TEMPERATURE;

D O I：

10.1016/j.matdes.2013.12.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pure Ni was successfully friction stir processed (FSP) using a common heat-treated steel tool under additional water cooling. The FSP Ni exhibited a multi-modal grain size distribution, with some relatively coarse grains of about 3-5 lm distributed in the ultra-fine grained (UFG) matrix. Sound tensile properties with a high yield strength of similar to 500 MPa and a large uniform elongation of similar to 12% were achieved in the UFG FSP Ni, attributable to the enhanced strain hardening capacity. This study describes an effective low-cost method of processing high melting point metals, and also provides a methodology to produce UFG pure Ni by FSP. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：848 / 851

页数：4

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