The role of boron on a conventional nickel-based superalloy

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	The role of boron on a conventional nickel-based superalloy; The role of boron on a conventional nickel-based superalloy
	P. J. Zhou; J. J. Yu; X. F. Sun; H. R. Guan; Z. Q. Hu
	2008 ; 2008
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing ; Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093 ; 0921-5093
卷号	491 期号:1-2 页码:159-163
摘要	Stress rupture tests of M951 superalloy containing various boron concentrations are performed at 1100 degrees C/40MPa. The results show that boron in the range of 0.003-0.024% is beneficial to the rupture life. Further increase of boron contents leads to the drop of rupture life. The tensile tests at 1000 degrees C indicate that, despite the increase of tensile elongation, the tensile strength at 1000 degrees C is depressed by the boron doping. These effects of boron are explained in a terms of an easy grain boundary transfer between adjacent grains. Thus, large dislocation pileups in the vicinity of grain boundary are less likely. Thereby, the propensity for intergranular crack nucleation should be reduced. Besides, a way to estimate the volume of boride is proposed. (C) 2008 Elsevier B.V. All rights reserved.; Stress rupture tests of M951 superalloy containing various boron concentrations are performed at 1100 degrees C/40MPa. The results show that boron in the range of 0.003-0.024% is beneficial to the rupture life. Further increase of boron contents leads to the drop of rupture life. The tensile tests at 1000 degrees C indicate that, despite the increase of tensile elongation, the tensile strength at 1000 degrees C is depressed by the boron doping. These effects of boron are explained in a terms of an easy grain boundary transfer between adjacent grains. Thus, large dislocation pileups in the vicinity of grain boundary are less likely. Thereby, the propensity for intergranular crack nucleation should be reduced. Besides, a way to estimate the volume of boride is proposed. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[zhou, p. j.; yu, j. j.; sun, x. f.; guan, h. r.; hu, z. q.] chinese acad sci, inst met res, dept superalloys, shenyang 110016, peoples r china. [zhou, p. j.] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, pj (reprint author), chinese acad sci, inst met res, dept superalloys, 72 wenhua rd, shenyang 110016, peoples r china;pjzhou@imr.ac.cn ; [zhou, p. j.; yu, j. j.; sun, x. f.; guan, h. r.; hu, z. q.] chinese acad sci, inst met res, dept superalloys, shenyang 110016, peoples r china. [zhou, p. j.] chinese acad sci, grad sch, beijing 100039, peoples r china.;zhou, pj (reprint author), chinese acad sci, inst met res, dept superalloys, 72 wenhua rd, shenyang 110016, peoples r china;pjzhou@imr.ac.cn
关键词	M951 Alloy M951 Alloy Grain Boundaries Grain Boundaries Stress-rupture Stress-rupture Boron Boron Borides Borides Ni3al Ni3al Grain-boundary Segregation Grain-boundary Segregation Vacancy Formation Energies Vacancy Formation Energies Environmental Environmental Embrittlement Embrittlement Solute Segregation Solute Segregation Dislocation Line Dislocation Line Ni3al Ni3al Behavior Behavior Alloy Alloy Polycrystalline Polycrystalline Microstructure Microstructure
URL	查看原文 ; 查看原文
WOS记录号	WOS:000258236800020 ; WOS:000258236800020
引用统计	被引频次：67[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33393
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. J. Zhou,J. J. Yu,X. F. Sun,et al. The role of boron on a conventional nickel-based superalloy, The role of boron on a conventional nickel-based superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008, 2008,491, 491(1-2):159-163, 159-163.
APA	P. J. Zhou,J. J. Yu,X. F. Sun,H. R. Guan,&Z. Q. Hu.(2008).The role of boron on a conventional nickel-based superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,491(1-2),159-163.
MLA	P. J. Zhou,et al."The role of boron on a conventional nickel-based superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 491.1-2(2008):159-163.