标题:Formation of hypoeutectic microstructure in a rapidly solidified Al-5 wt- percent Sr alloy
作者:Z.-H. Zhang;X.-F. Bian;Y. Wang
作者机构:[Zhang, Z.-H] Key Lab. Liquid Struct./Hered. Mat., Ministry of Education, Shandong University, 73 Jingshi Road, Jinan 250061, China;[ Bian, X.-F] Key 更多
通讯作者:Zhang, ZH
通讯作者地址:[Zhang, ZH]Shandong Univ, Minist Educ, Key Lab Liquid Struct & Hered Mat, 73 Jingshi Rd, Jinan 250061, Peoples R China.
来源:Materials Science and Technology: MST: A publication of the Institute of Metals
出版年:2003
卷:19
期:6
页码:791-795
DOI:10.1179/026708303225002857
摘要:The microstructure and thermal analysis of the melt spun Al -5 wt- percent Sr alloy have been investigated using X-ray diffraction, TEM, and differential scanning calorimetry (DSC). The experimental results show that rapid solidification makes the eutectic composition shift to a higher Sr content exceeding 5 wt- percent Sr. The microstructure of the melt spun Al - 5Sr alloy is hypoeutectic and composed of primary alpha-Al cells and the alpha-Al/Al_4Sr eutectic; quite different from that of the ingot like alloy comprising coarse primary Al_4Sr phase embedded in the eutectic. In the melt spun Al - 5Sr alloy, some areas comprise equiaxed or elongated alpha-Al cells with intercellular irregular alpha-Al/Al_4Sr eutectic. Moreover, some areas fully comprise coupled alpha-Al/Al_4Sr eutectic. The eutectic Al_4Sr phase is lamellar strip like or vermiform in morphology. The size of the eutectic Al_4Sr phase is less than 50 nm in width. Furthermore, the very fine microstructure of the melt spun Al - 5Sr alloy has a marked effect on the DSC trace in heating process.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:2
Scopus被引频次:2
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037700086&doi=10.1179%2f026708303225002857&partnerID=40&md5=66a4d059e8bdaa06f96aec724f93079c
TOP