Effect of phosphorus on mechanical properties of fine-grained GH4133 nickel base superalloy

IMR OpenIR

	Effect of phosphorus on mechanical properties of fine-grained GH4133 nickel base superalloy
	Sun, WR; Guo, SR; Meng, XN; Li, N; Hu, ZQ
通讯作者	Sun, WR(wrsun@imr.ac.cn)
	2004-05-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	40 期号:5 页码:477-482
摘要	Apposite phosphorus content can improve the mechanical properties of the finegrained GH4133 nickel-base superalloy. The grain size of the alloy was refined to ASTM 8-10 grade by controlling the thermal processing and the heat treatment. The tensile specimens fail by intergranular fracture even when the phosphorus level is as high as 0.140% (mass fraction). The yield and ultimate strengths of the refined alloy are 200 and 150 MPa higher than that of the alloy with a standard microstructure of ASTM 4-5 grain size, respectively. And the above two strengths of the alloy with 0.140% phosphorus are 100 and 50 MPa higher than those of the alloy with a industrial controlled phosphorus level, say 0.005%. The impact specimens fail by intragranular fracture when the phosphorus level is below 0.023% and the fracture toughness of the alloy is higher than 70 MJ/m(2). Some parts of the fracture surface of the impact specimen with 0.140% phosphorus exhibited intergranular fracture characteristics and the fracture toughness is lowered to about 40 MJ/m(2). Phosphorus extends the rupture life of the GH4133 alloy and its optimum addition is around 0.011%. The interaction between phosphorus atmosphere and dislocations is discussed to understand the effect of phosphorus on different type of mechanical properties.
关键词	phosphorus Ni base superalloy mechanical property
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000221838900007
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：3[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/321006/80975
专题	中国科学院金属研究所
通讯作者	Sun, WR
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, WR,Guo, SR,Meng, XN,et al. Effect of phosphorus on mechanical properties of fine-grained GH4133 nickel base superalloy[J]. ACTA METALLURGICA SINICA,2004,40(5):477-482.
APA	Sun, WR,Guo, SR,Meng, XN,Li, N,&Hu, ZQ.(2004).Effect of phosphorus on mechanical properties of fine-grained GH4133 nickel base superalloy.ACTA METALLURGICA SINICA,40(5),477-482.
MLA	Sun, WR,et al."Effect of phosphorus on mechanical properties of fine-grained GH4133 nickel base superalloy".ACTA METALLURGICA SINICA 40.5(2004):477-482.