کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7991966 1516145 2018 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissimilar gas tungsten arc weld-brazing of Al/steel using Al-Si filler metal: Microstructure and strengthening mechanisms
ترجمه فارسی عنوان
گازی نازک گازی تنگستن قوس الکتریکی آلومینیوم / فولاد با استفاده از آلومینیوم فلز پرکننده: ساختارهای میکروارگانیسم و ​​مکانیسم تقویت
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
چکیده انگلیسی
In this paper gas tungsten arc welding (GTAW) was applied to dissimilar lap joining of Al6061 and Zn-coated galvanized low carbon steels using Al-5 wt% Si filler metal. The joining mechanism was based on a hybrid brazing/welding mechanism. Three factors contributed to the joint strength including (i) low heat input rate of GTAW process which reduce the intermetallic compound layer growth during joining, (ii) the special role of Si in the filler metal which was able to change the nature of reaction layer from predominantly η-Al5Fe2 phase to predominately less brittle Al-Fe-Si phase and (iii) the flux-like action of Zn-coating which ensures complete wetting of steel surface by Al melt. It was found that there is a critical heat input which when exceeded caused degradation of the mechanical strength of the joint due to increased intermetallic compound growth.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 749, 15 June 2018, Pages 121-127
نویسندگان
, ,