کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1639589 1517043 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure and properties of 7A52 Al alloy welded joint
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Microstructure and properties of 7A52 Al alloy welded joint
چکیده انگلیسی

7A52 Al alloy plate aged at 105 °C for 8 h and then at 130 °C for 24 h was welded by means of TIG using Al-6.3Mg-0.35Sc-0.1Zr-0.1Cr solder wire. Mechanical properties and microstructures of welded joint were studied. There are two obviously soft areas in the welded joint, welding seam and over-aging zone. The mechanical properties of welded joint are that σb is 358 MPa, σ0.2 is 238 MPa and δ5 is 6.6%. 75.6% of welding coefficient can be achieved. The addition of scandium leads to very significant grain refinement in the fusion zone, which results in a reduction in solidification cracking tendency. The solidification cracking isn't observed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 18, Issue 4, August 2008, Pages 804-808