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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
ISSN0925-8388
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
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.
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