Effect of cooling rate on microstructure and properties of heat-treated Fe3Al intermetallics

doi:10.4028/www.scientific.net/AMR.189-193.3891

CORC > 兰州理工大学 > 兰州理工大学

	Effect of cooling rate on microstructure and properties of heat-treated Fe3Al intermetallics
	Li, Ya Min 1,2; Liu, Hong Jun 1; Hao, Yuan 1
	2011
会议日期	April 9, 2011 - April 11, 2011
会议地点	Guilin, China
关键词	Aluminum Fracture Hardness Heat treatment Intermetallics Manufacture Microstructure Molds Silicates Sodium Tensile strength After-heat treatment Cooling rates Fe3Al Furnace cooling Homogenizing annealing Impact fracture Intercrystalline fractures Lattice distortions Microstructure and properties Oil quenching Property Sand moulds Sodium silicate Solid solubilities
卷号	189-193
DOI	10.4028/www.scientific.net/AMR.189-193.3891
页码	3891-3894
英文摘要	The casting Fe3Al intermetallics were solidified in sodium silicate sand mould and permanent mould respectively to get different cooling rates. After heat treatment (1000°C/15 h homogenizing annealing + furnace cooling followed by 600°C/1 h tempering + oil quenching), the microstructure and properties of Fe3Al intermetallics were investigated. The results show that the heat-treated Fe3Al 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 Fe3Al 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. © (2011) Trans Tech Publications.
会议录	Advanced Materials Research
会议录出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
语种	英语
ISSN号	10226680
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/116177]
专题	兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Key Laboratory of Non-ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China; 2.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, College of Materials Science and Engineering, Lanzhou University of Technology, 287 Langongping Road, Lan Zhou, 730050, China
推荐引用方式 GB/T 7714	Li, Ya Min,Liu, Hong Jun,Hao, Yuan. Effect of cooling rate on microstructure and properties of heat-treated Fe3Al intermetallics[C]. 见:. Guilin, China. April 9, 2011 - April 11, 2011.