کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1623670 1516409 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solidification pathways and constituent phases of Mg–Zn–Y–Zr alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Solidification pathways and constituent phases of Mg–Zn–Y–Zr alloys
چکیده انگلیسی

Thermal analysis with cooling curve has been used for investigation of microstructure evolution with composition variation during solidification process in Mg–Zn–Y–Zr alloys (denoted as ZW alloys). The obtained results reveal that two pseudobinary eutectic reactions appear one after another during solidification due to the different Zn/Y ratio (ranged from 0.35 to 3.33). In ZW62 alloy, a peritectic reaction happens before I-phase formation through pseudobinary eutectic reaction distinguishing it from other alloys. The changes of characteristic temperature points for phase transformation are studied in detail. Microstructure observation shows dominating secondary phases in the alloys differ from one another according to various Zn/Y ratios. Divorced massive eutectic Z-phase is formed during solidification in a low Zn/Y ratio; W-phase comes out when Zn/Y ratio grows to 0.85; if the Zn/Y ratio increases further to a certain level, I-phase forms by a peritectic reaction through W-phase and the liquid.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 468, Issues 1–2, 22 January 2009, Pages 170–178
نویسندگان
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