کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9796656 1514951 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pore formation during hybrid laser-tungsten inert gas arc welding of magnesium alloy AZ31B-mechanism and remedy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Pore formation during hybrid laser-tungsten inert gas arc welding of magnesium alloy AZ31B-mechanism and remedy
چکیده انگلیسی
One of the major concerns during high speed welding of magnesium alloys is the presence of porosity in the weld metal that can deteriorate mechanical properties. This study seeks to analyze the presence method and quantity of pore during hybrid laser-tungsten inert gas arc (TIG) welding of magnesium alloy AZ31B by radiography, optical microscopy and electron probe microanalysis (EMPA). At the same time, it identifies both the mechanism of pore formation and a remedy for this problem. The experimental results indicate that lacking of shielding gas for laser beam is the dominant cause of macroporosity formation during the hybrid of laser-TIG welding of magnesium Alloys AZ31B plate, and hydrogen is not main cause to form large pores. A favorable weld without porosity can be obtained by appending lateral shielding gas for laser beam.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 390, Issues 1–2, 15 January 2005, Pages 76-80
نویسندگان
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