Hot deformation mechanisms and microstructure evolution of SiCp/2014Al composite

IMR OpenIR

	Hot deformation mechanisms and microstructure evolution of SiCp/2014Al composite
	Huang, Zhiye; Zhang, Xingxing; Xiao, Bolyu; Ma, Zongyi; Xiao, BL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2017-10-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	722 页码:145-157
摘要	Hot deformation behavior of a stir cast and hot extruded 14 vol% SiCp/2014Al composite was studied at temperatures from 355 to 495 degrees C and strain rates from 0.001 to 1 s(-1), including microstructure evolution and damage formation. Stress-strain rate fitting was optimized to construct accurate processing maps based on modified dynamic materials model (MDMM). In addition, the strain rate sensitivity maps were plotted, indicating more significant effect of temperature on deformation mechanism than strain rate. The dissipation efficiency versus temperature curves indicated: (i) a transition from dynamic recovery (DRV) to dynamic recrystallization (DRX) at 400 degrees C; (ii) occurrence of dynamic grain growth (DGG) at 400-440 degrees C; (iii) existence of equicohesive point (T-eq) of 450 degrees C (similar to 0.8 T-m) above which grain boundaries weakened and contributed to plastic deformation. The particular fluctuation of temperature sensitivity at 440 degrees C was caused by an abnormal grain growth. (C) 2017 Elsevier B.V. All rights reserved.; Hot deformation behavior of a stir cast and hot extruded 14 vol% SiCp/2014Al composite was studied at temperatures from 355 to 495 degrees C and strain rates from 0.001 to 1 s(-1), including microstructure evolution and damage formation. Stress-strain rate fitting was optimized to construct accurate processing maps based on modified dynamic materials model (MDMM). In addition, the strain rate sensitivity maps were plotted, indicating more significant effect of temperature on deformation mechanism than strain rate. The dissipation efficiency versus temperature curves indicated: (i) a transition from dynamic recovery (DRV) to dynamic recrystallization (DRX) at 400 degrees C; (ii) occurrence of dynamic grain growth (DGG) at 400-440 degrees C; (iii) existence of equicohesive point (T-eq) of 450 degrees C (similar to 0.8 T-m) above which grain boundaries weakened and contributed to plastic deformation. The particular fluctuation of temperature sensitivity at 440 degrees C was caused by an abnormal grain growth. (C) 2017 Elsevier B.V. All rights reserved.
部门归属	[huang, zhiye ; zhang, xingxing ; xiao, bolyu ; ma, zongyi] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [huang, zhiye] univ sci & technol china, sch mat sci & engn, hefei 230001, peoples r china
关键词	Metal Matrix Composites Hot Deformation Processing Map Dynamic Recovery Dynamic Recrystallization
学科领域	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China [U1508216]; National Basic Program of China [2012CB619600]
收录类别	SCI
语种	英语
WOS记录号	WOS:000405520400020
引用统计	被引频次：52[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/321006/78005
专题	中国科学院金属研究所
通讯作者	Xiao, BL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Huang, Zhiye,Zhang, Xingxing,Xiao, Bolyu,et al. Hot deformation mechanisms and microstructure evolution of SiCp/2014Al composite[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,722:145-157.
APA	Huang, Zhiye,Zhang, Xingxing,Xiao, Bolyu,Ma, Zongyi,&Xiao, BL .(2017).Hot deformation mechanisms and microstructure evolution of SiCp/2014Al composite.JOURNAL OF ALLOYS AND COMPOUNDS,722,145-157.
MLA	Huang, Zhiye,et al."Hot deformation mechanisms and microstructure evolution of SiCp/2014Al composite".JOURNAL OF ALLOYS AND COMPOUNDS 722(2017):145-157.