Effects of grain boundary η phase on the mechanical properties of Fe-Ni-Cr alloy

Acta Metall Sin

2005, Vol. 41

Issue (11): 1155-1158 DOI:

Research Articles

Current Issue | Archive | Adv Search

Effects of grain boundary η phase on the mechanical properties of Fe-Ni-Cr alloy

LI Xiuyan; RONG Lijian; LI Yiyi

Institute of Metal Research; The Chinese Academy of Sciences

Cite this article:

LI Xiuyan; RONG Lijian; LI Yiyi. Effects of grain boundary η phase on the mechanical properties of Fe-Ni-Cr alloy. Acta Metall Sin, 2005, 41(11): 1155-1158 .

Download:

PDF(445KB)
Export: BibTeX | EndNote (RIS)

Abstract The microstructures and mechanical properties of an Fe-Ni-Cr austenite alloy undergone different ageing treatments have been examined. Theη phase precipitated on the grain boundary of the over-aged alloy. Contrary to be crack sources and make mechanical properties of alloys deteriorate as it has been always considered, ηphase was found to have little effect on room temperature properties and furthermore, it improved the high temperature ductility of the alloy via blocking the grain boundary slip due to its coherency with the austenite matrix. SEM fractography shows that the 1023 K tensile fracture transforms from intergranular mode to microvoid coalescence mode due to the presentation ofηphase. Addition of Nb causes more dispersed distribution ofη phase along grain boundaries and therefore results in higher high temperature ductility.

Key words: Fe-Ni-Cr alloy η phase coherent

Received: 30 June 2005

ZTFLH:

TG142.25

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	LI Xiuyan
	RONG Lijian
	LI Yiyi

URL:

https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2005/V41/I11/1155

[1] Krupp U, Kane W M, Laird C, McMahon C J. Mater Sci Eng, 2004; 387-389A: 409
[2] Sajjadi S A, Nategh S, Isac M, Zebarjad S M. J Mater Process Technol, 2004; 155:1900
[3] Straumal B B, Ziba P, Gust W. Int J Inorg Mater, 2001; 3: 1113
[4] Gifkins R C. Int J Fatigue, 1995; 17: 231
[5] Zhao S Q, Xie X S, Smith G D, Patel S J. Mater Sci Eng, 2003; 355A: 95
[6] Sullian C P, Donachie M J. Met Eng Quarterly, 1971; Suppl.1-11
[7] Li X Y, Zhang J, Rong L J, Li Y Y. Chin J Mater Res, in press (李秀艳,张建,戎利建,李依依．材料研究学报,已接收)

[1]	ZHANG Haijun, QIU Shi, SUN Zhimei, HU Qingmiao, YANG Rui. First-Principles Study on Free Energy and Elastic Properties of Disordered β-Ti₁_-_xNb_x Alloy: Comparison Between SQS and CPA[J]. 金属学报, 2020, 56(9): 1304-1312.
[2]	DONG Qiyi, SHEN Leinuo, CAO Feng, JIA Yanlin, WANG Mingpu. STUDY OF THE COARSENING AND HARDENING BEHAVIORS OF COHERENT g-Fe PARTICLES IN Cu-2.1Fe ALLOY[J]. 金属学报, 2014, 50(10): 1224-1230.
[3]	ZHUO Haiou TANG Jiancheng YE Nan. Cu–Y₂O₃ COMPOSITES PREPARED BY LIQUID PHASE IN SITU REACTION[J]. 金属学报, 2012, 48(12): 1474-1478.
[4]	KE Changbo MA Xiao ZHANG Xinping. PHASE FIELD SIMULATION OF GROWTH KINETICS OF COHERENT Ni₄Ti₃ PRECIPITATE IN NiTi SHAPE MEMORY ALLOY[J]. 金属学报, 2010, 46(1): 84-90.
[5]	LIN Shuangping HUANG Hui WEN Shengping NIE Zuoren. TEM OBSERVATION OF THE Al3Er PHASE DURING HOMOGENIZING OF THE 5083 ALLOY WITH Er ADDITION[J]. 金属学报, 2009, 45(8): 978-982.
[6]	FANG Xiao-Ying. 3n special boundary distributions of the cold-rolled and annealed 304 stainless steel[J]. 金属学报, 2007, 43(12): 1239-1244 .
[7]	. MICROSCOPIC PHASE-FIELD SIMULATION OF COARSENING BEHAVIOR OF PRECIPITATE OF Ni75AlxV25-x ALLOY[J]. 金属学报, 2006, 42(3): 239-244 .
[8]	BO Xiangzheng; FANG Hongsheng( Departmetn of Materials Science and Engineering; Tsinghua University; Beijing; 100084)Correspondent: BO Xiangzheng; Tel: (010)62782361; E-mail: fhs - dms tsinghua. edu. cn.. STUDY OF THE SURFACE RELIEF EFFECTS ASSOCIATED WITH GRAIN BOUNDARY ALLOTRIOMORPHS BY SCANNING TUNNELING MICROSCOPY[J]. 金属学报, 1998, 34(8): 807-812.
[9]	QIN Guiying;YU Xuejie;JIN Heng;WANG Jingcheng Shanghai Iron and Steel Research Institute. HYSTERESIS OF PHASE TRANSFORMATION TEMPERATURE IN NiTi SHAPE MEMORY ALLOY[J]. 金属学报, 1992, 28(1): 6-10.
[10]	YONG Qilong;LI Yongfu;SUN Zhenbao;WU Baorong Yunnan Institute; of Technology;Kunming; Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing. THEORETICAL CALCULATION OF SPECIFIC INTERFACIAL ENERGY OF SEMICOHERENT INTERFACE BETWEEN MICROALLOY CARBONITRIDES AND AUSTENITE[J]. 金属学报, 1988, 24(5): 373-375.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed