Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy

The effects of low angle grain boundaries on the mechanical properties of second generation single crystal superalloy DD5 were investigated and the test specimens were prepared by using seeds. The results show that at 870 ℃, the yield strength and breaking strength showed no difference when the angl...

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Main Authors:	QIN Jianchao, CUI Renjie, HUANG Zhaohui, ZHAO Jingqian, ZHANG Yipeng, ZONG Cui, CHEN Shengping
Format:	Article
Language:	zho
Published:	Journal of Aeronautical Materials 2017-06-01
Series:	Journal of Aeronautical Materials
Subjects:	superalloy low angle grain boundary rupture life tensile property
Online Access:	http://jam.biam.ac.cn/CN/Y2017/V37/I3/24

id	doaj-07210750c91b4c4dad23f3ba2a4e7c82
record_format	Article
spelling	doaj-07210750c91b4c4dad23f3ba2a4e7c822020-11-24T23:58:13ZzhoJournal of Aeronautical MaterialsJournal of Aeronautical Materials1005-50531005-50532017-06-01373242910.11868/j.issn.1005-5053.2016.000127201703000127Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base SuperalloyQIN Jianchao0CUI Renjie1HUANG Zhaohui2ZHAO Jingqian3ZHANG Yipeng4ZONG Cui5CHEN Shengping6National Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaNational Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaNational Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaNational Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaNational Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaNational Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaNational Key Lab. of High Temperature Structure Structural Materials, Beijing Institute of Aeronautical Materials, Beijing 100095, ChinaThe effects of low angle grain boundaries on the mechanical properties of second generation single crystal superalloy DD5 were investigated and the test specimens were prepared by using seeds. The results show that at 870 ℃, the yield strength and breaking strength showed no difference when the angle is below 16.1°. The elongation is higher than 15% when the angle is below 11.4°, but the elongation decreases quickly when angle is above 11.4°. At 980 ℃/250 MPa, the rupture life is higher than 130 h when the angle is below 5.1°, and decreased slowly when the angle is above 5.1°. The rupture life still remaines 85% when the angle is 14.8°. But the rupture life decreases quickly when the angle is above 14.8°.At 1093 ℃/158 MPa, the rupture life is higher than 30 h when the angle is below 5.1°, and decreases when the angle is above 5.1°.http://jam.biam.ac.cn/CN/Y2017/V37/I3/24superalloylow angle grain boundaryrupture lifetensile property
collection	DOAJ
language	zho
format	Article
sources	DOAJ
author	QIN Jianchao CUI Renjie HUANG Zhaohui ZHAO Jingqian ZHANG Yipeng ZONG Cui CHEN Shengping
spellingShingle	QIN Jianchao CUI Renjie HUANG Zhaohui ZHAO Jingqian ZHANG Yipeng ZONG Cui CHEN Shengping Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy Journal of Aeronautical Materials superalloy low angle grain boundary rupture life tensile property
author_facet	QIN Jianchao CUI Renjie HUANG Zhaohui ZHAO Jingqian ZHANG Yipeng ZONG Cui CHEN Shengping
author_sort	QIN Jianchao
title	Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy
title_short	Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy
title_full	Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy
title_fullStr	Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy
title_full_unstemmed	Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy
title_sort	effect of low angle grain boundaries on mechanical properties of dd5 single crystal ni-base superalloy
publisher	Journal of Aeronautical Materials
series	Journal of Aeronautical Materials
issn	1005-5053 1005-5053
publishDate	2017-06-01
description	The effects of low angle grain boundaries on the mechanical properties of second generation single crystal superalloy DD5 were investigated and the test specimens were prepared by using seeds. The results show that at 870 ℃, the yield strength and breaking strength showed no difference when the angle is below 16.1°. The elongation is higher than 15% when the angle is below 11.4°, but the elongation decreases quickly when angle is above 11.4°. At 980 ℃/250 MPa, the rupture life is higher than 130 h when the angle is below 5.1°, and decreased slowly when the angle is above 5.1°. The rupture life still remaines 85% when the angle is 14.8°. But the rupture life decreases quickly when the angle is above 14.8°.At 1093 ℃/158 MPa, the rupture life is higher than 30 h when the angle is below 5.1°, and decreases when the angle is above 5.1°.
topic	superalloy low angle grain boundary rupture life tensile property
url	http://jam.biam.ac.cn/CN/Y2017/V37/I3/24
work_keys_str_mv	AT qinjianchao effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy AT cuirenjie effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy AT huangzhaohui effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy AT zhaojingqian effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy AT zhangyipeng effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy AT zongcui effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy AT chenshengping effectoflowanglegrainboundariesonmechanicalpropertiesofdd5singlecrystalnibasesuperalloy
_version_	1725451108426448896

Effect of Low Angle Grain Boundaries on Mechanical Properties of DD5 Single Crystal Ni-base Superalloy

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