پديد آورنده :
عظيمي، قاسم
عنوان :
بررسي تاثير دما و نحوه سردشدن برخوردگي بين دانه اي در مقاطع جوش فولاد زنگ نزن آستنيتي 347
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
مهندسي مواد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مواد
صفحه شمار :
دوازده، 99، [II]ص .: مصور، جدول، شكل، نمودار
استاد راهنما :
مرتضي شمعانيان، احمد ساعتچي
توصيفگر ها :
فولادهاي زنگ نزن ، فريتي ، ماتنزيتي ، سخت رسوبي ، آستنيتي / آزمايش اچ اسيد اگزاليك اسيد نيتريك / ميكروسكوپ الكتروني روبشي / اچ كردن / منطقه جوش / فلز پايه
تاريخ نمايه سازي :
16/01/84
تاريخ ورود اطلاعات :
1395/11/20
چكيده فارسي :
به فارسي و انگليسي قابل رويت در قسمت " نسخه ديجيتال "
چكيده انگليسي :
Abstract In this study the effect of intergranular corrosion on welded sections of AISI 347austenitic stainless steel was investigated After welding different postweld heattreatments were used and the effect oftfi se treatments on the stabiliation or sensitizationof sampleswere determined Standard experiments according to Jrocedures described by ASTM A262 were used toidentify intergranular Experiments Included the etching the samples by oxalic acid todetermine their sens tivity this test is use to a cept the samples and the resultingstructures were studied by SEM and Optical Microscope Unaccepted samples wereteste by boili 1g Flitric acid test for five 48h peri odshours After each 48 hou s period specimens weight losses were measured Then In accordance with these wel t lossesduring 5 stages the corrosion rate of each specimenwas determined In the light of thecorrosion rate results an appropriate postweld heat treatment was adopted to stabilizeweldments structure Results revealed usinB of stabilization heat treatment in 1050 C for two hours and air cooling or quenching Increaseresistanceof samplesto intergranular corrosion d j 1i1l lt f N
استاد راهنما :
مرتضي شمعانيان، احمد ساعتچي
