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Effect of Squeeze Casting on Microstructure and Mechanical Properties of Hypereutectic Al-xSi Alloys
Alternative TitleEffect of Squeeze Casting on Microstructure and Mechanical Properties of Hypereutectic Al-xSi Alloys
Li Runxia; Liu Lanji; Zhang Lijun; Sun Jihong; Shi Yuanji; Yu Baoyi
2017
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume33Issue:4Pages:404-410
AbstractThe effect of squeeze casting on microstructure and mechanical properties of hypereutectic Al-xSi alloys ( x = 15, 17.5, 22 wt%) was investigated in this study. Results show that microstructure of the hypereutectic Al-xSi alloys was obviously improved by squeeze casting. The amount of coarse primary Si phase decreased, while that of fine primary alpha-Al dendrites increased with the increase of squeeze casting pressure. Due to the decrease of coarse primary Si particles, cracking of the matrix was reduced, whilst the fine microstructure, and mechanical properties of the squeeze casting alloys were improved. Compared with gravity casting alloys, mechanical properties of the hypereutectic Al-xSi alloys solidified at 600 MPa were improved significantly. Hardness of the squeeze casting hypereutectic Al-(15, 17.5, 22 wt%) Si alloys was improved by 15.91%, 12.23%, 17.48%, ultimate tensile strength was improved by 37.85%, 32.27%, 22.74%, and elongation was improved by 55.83%, 167.86%, 126.76%, respectively. Due to the uniform distribution of Si phases in squeeze casting Al-xSi alloys, their wear resistance was markedly enhanced. Copyright (C) 2017, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited.
Other AbstractThe effect of squeeze casting on microstructure and mechanical properties of hypereutectic Al-xSi alloys (x = 15, 17.5, 22 wt%) was investigated in this study. Results show that microstructure of the hypereutectic Al-xSi alloys was obviously improved by squeeze casting. The amount of coarse primary Si phase decreased, while that of fine primary α-Al dendrites increased with the increase of squeeze casting pressure. Due to the decrease of coarse primary Si particles, cracking of the matrix was reduced, whilst the fine microstructure, and mechanical properties of the squeeze casting alloys were improved. Compared with gravity casting alloys, mechanical properties of the hypereutectic Al-xSi alloys solidified at 600 MPa were improved significantly. Hardness of the squeeze casting hypereutectic Al-(15, 17.5, 22 wt%) Si alloys was improved by 15.91%, 12.23%, 17.48%, ultimate tensile strength was improved by 37.85%, 32.27%, 22.74%, and elongation was improved by 55.83%, 167.86%, 126.76%, respectively. Due to the uniform distribution of Si phases in squeeze casting Al-xSi alloys, their wear resistance was markedly enhanced.
KeywordADDITIONS Hypereutectic Al-Si alloys Squeeze casting Microstructure Mechanical properties Primary Si phases
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Shenyang Application Basic Research Fund]
CSCD IDCSCD:5977641
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/145798
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Li Runxia,Liu Lanji,Zhang Lijun,et al. Effect of Squeeze Casting on Microstructure and Mechanical Properties of Hypereutectic Al-xSi Alloys[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2017,33(4):404-410.
APA Li Runxia,Liu Lanji,Zhang Lijun,Sun Jihong,Shi Yuanji,&Yu Baoyi.(2017).Effect of Squeeze Casting on Microstructure and Mechanical Properties of Hypereutectic Al-xSi Alloys.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,33(4),404-410.
MLA Li Runxia,et al."Effect of Squeeze Casting on Microstructure and Mechanical Properties of Hypereutectic Al-xSi Alloys".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 33.4(2017):404-410.
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