Effect of skew angle of holes on the tensile behavior of a Ni-base single crystal superalloy

被引：48

作者：

Zhou, Z. J. ^{[1
]}

Wang, L. ^{[1
]}

Wen, J. L. ^{[2
]}

Lou, L. H. ^{[1
]}

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

机构：

[1] Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 628卷

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

High-temperature alloys; Mechanical properties; Microstructure; Holes; Skew angles; Digital image correlation (DIC) technique; PLASTIC ANISOTROPY; FLAT-PLATE; STRENGTH;

D O I：

10.1016/j.jallcom.2014.12.096

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：

Holes of various skew angles were electrochemically machined (ECM) in the middle of the plate specimens in a Ni-base single crystal (SX) superalloy. The surface strain fields around the holes during tensile test at room temperature were in-situ observed by an ARAMIS - optical 3D deformation analysis system based on the digital image correlation (DIC) technique. It was demonstrated that both the yield stress and the tensile elongation increased with the increase of the skew angles from 30 degrees to 90 degrees. Strain concentrated at the acute side of the skew holes. The results were analyzed based on the crystallographic structure of specimens and the slip traces observed on fracture surfaces. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：158 / 163

页数：6

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