کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7994619 | 1516160 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Properties and microstructure changes in Au-Cu-based alloy with indium addition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this work, the effects of indium addition on the microstructure, corrosion resistance and hardness in as-cast Au-Cu-based alloys were investigated. The experimental results indicated that as-cast Au-Cu-based shown a typical dendritic structure, and the secondary dendrite arm spacing of alloy was significantly decreased by adding indium element, especially when the In-rich phase existed at interdendritic region. The as-cast samples without indium and with 1Â wt.% In were a single Au-Cu-based solid solution with face-centered cubic (f.c.c.) structure. Moreover, the In-rich phase of the alloy with 3Â wt.% In shown granular structure, but with 5Â wt.% In was network structure. With the indium content increasing, the hardness of alloy was significantly increased and exhibited better Hall-Petch type relationship with the secondary dendrite arm spacing. Minor indium addition enhanced the corrosion resistance of alloy, but when an In-rich phase generated at interdendritic region, the corrosion rate was increased due to the micro-galvanic effect and also affected by the structure of the In-rich phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 734, 15 February 2018, Pages 81-88
Journal: Journal of Alloys and Compounds - Volume 734, 15 February 2018, Pages 81-88
نویسندگان
Junkai Zhang, Ying Li, Qin Zhang,