Influence of shot peening on tensile properties of DD6 single crystal superalloy

HAN Mei; YU Jian; LI Jia-rong; XIE Hong-ji; DONG Jian-min; YANG Yan

doi:10.11868/j.issn.1001-4381.2019.000191

Cailiao gongcheng (Aug 2019)

Influence of shot peening on tensile properties of DD6 single crystal superalloy

HAN Mei,
YU Jian,
LI Jia-rong,
XIE Hong-ji,
DONG Jian-min,
YANG Yan

Affiliations

HAN Mei: Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
YU Jian: Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
LI Jia-rong: Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
XIE Hong-ji: Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
DONG Jian-min: Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China
YANG Yan: Arm Air Force Stationed in Beijing Military Representative, Beijing 100095, China

DOI: https://doi.org/10.11868/j.issn.1001-4381.2019.000191
Journal volume & issue: Vol. 47, no. 8
pp. 169 – 175

Abstract

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The influence of cast steel shot-peening on the tensile properties of the second generation single crystal superalloy DD6 under 500, 600,650℃ was investigated by SEM, X-ray and TEM. The results show that the shot-peening has no influence on the tensile strength of DD6 alloy at 500, 600,650℃, and the yield strength is slightly increased, while the elongation and the shrinkage of cross section are remarkably decreased. The shot-peening DD6 alloy is ruptured after the flow stress rising to the highest point, and the cross section of fracture samples presents circle shape. The stress-strain curves of non-shot-peening DD6 alloy exhibit double stages feature, and the cross section of fracture samples presents ellipse shape.

Published in Cailiao gongcheng

ISSN: 1001-4381 (Print)
Publisher: Journal of Materials Engineering
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: http://jme.biam.ac.cn/CN/1001-4381/home.shtml

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