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	Effect of Cooling Rate on Microstructure and Properties of Heat-treated Fe(3)Al Intermetallics
	Li, Yamin; Liu, Hongjun; Hao, Yuan
	2011
关键词	Fe(3)Al Cooling Rate Heat Treatment Microstructure Property
卷号	189-193
DOI	10.4028/www.scientific.net/AMR.189-193.3891
页码	3891-3894
英文摘要	The casting Fe(3)Al intermetallics were solidified in sodium silicate sand mould and permanent mould respectively to get different cooling rates. After heat treatment (1000 degrees C/15 h homogenizing annealing + furnace cooling followed by 600 degrees C/1 h tempering + oil quenching), the microstructure and properties of Fe(3)Al intermetallics were investigated. The results show that the heat-treated Fe(3)Al intermetallics at higher cooling rate has finer grained microstructure than lower cooling rate, and the lattice distortion increases due to the higher solid solubility of the elements Cr and B at higher cooling rate. The tensile strength and hardness of the Fe(3)Al intermetallics at higher cooling rate are slightly higher also. However, the impact power of intermetallics at higher cooling rate is 67.5% higher than that at lower cooling rate, and the impact fracture mode is also transformed from intercrystalline fracture at lower cooling rate to intercrystallin+transcrystalline mixed fracture at higher cooling rate.
会议录	MANUFACTURING PROCESS TECHNOLOGY, PTS 1-5
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS记录号	WOS:000292279502059
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/37387]
专题	国际教育学院 材料科学与工程学院
通讯作者	Li, Yamin
作者单位	Lanzhou Univ Technol, Minist Educ, Key Lab Nonferrous Met Alloys & Proc, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Yamin,Liu, Hongjun,Hao, Yuan. Effect of Cooling Rate on Microstructure and Properties of Heat-treated Fe(3)Al Intermetallics[C]. 见:.

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