مقاله Formation of Sub Grains During Friction Stir Welding of Gas pipes با word دارای 3 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است
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توجه : در صورت مشاهده بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی مقاله Formation of Sub Grains During Friction Stir Welding of Gas pipes با word،به هیچ وجه بهم ریختگی وجود ندارد
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سال انتشار: 1393
محل انتشار: بیست و دومین کنفرانس سالانه مهندسی مکانیک
تعداد صفحات: 3
چکیده:
Appropriate selection of Friction Stir Welding parameters i.e. rotational speed, translational speed, and downward force as well as suit design of tool will contribute to formation of a strong weld due to equal amalgamation of welded materials in the steady state conditions. In this experimental study, two gas pipes were sufficiently welded on a predesigned fixture and results were concluded subsequently. Scanning electron microscopy (SEM) an optical microscopy (OM) were employed as metallurgical tests to evaluate the grain sizes and morphological characteristics in transmuted area (welding zone). The feedbacks from metallurgical tests revealed a equal distribution of subgrains over the welding area. Also, consequenses showed a range of grain sizes from micro to sub micro scale. Furthermore, hardness test as mechanical test showed more wear strength on the welding zone. Thus, current investigations indicate by selecting the suit parameters, friction stir welding will create substructures on the welding area of pipes.
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