تأثیر سرعت چرخش ابزار بر خواص مکانیکی و رفتار خوردگی اتصال غیرهمجنس آلیاژ آلومینیوم 5083 و تیتانیوم خالص تجاری به روش جوشکاری همزن اصطکاکی

فرآیندهای نوین در مهندسی مواد

مقاله 8، دوره 11، شماره 4 - شماره پیاپی 43، اسفند 1396، صفحه 79-96   

نوع مقاله: علمی-پژوهشی

نویسندگان

مسعود شعبانی^{* 1}؛ بهروز شایق بروجنی²؛ رضا ابراهیمی کهریزسنگی³

¹دانشجوی کارشناسی ارشد، مرکز تحقیقات مواد پیشرفته، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، اصفهان، ایران.

²استادیار، دانشگاه شهرکرد، ایران

³استاد،مرکز تحقیقات مواد پیشرفته، دانشکده مهندسی مواد، واحد نجف آباد، دانشگاه آزاد اسلامی، نجف آباد، اصفهان، ایران

چکیده

در این مقاله، تأثیر سرعت چرخش ابزار بر روی خواص مکانیکی و خوردگی اتصال تیتانیوم خالص تجاری و آلیاژ آلومینیوم 5083، به روش همزن اصطکاکی، بررسی شده است. ابتدا با جوشکاری‌های مقدماتی محدوده پارامترهای لازم برای دستیابی به اتصال مناسب بدست آمده و سپس با تغییر سرعت چرخش ابزار، خواص مکانیکی و خوردگی نواحی متأثر از حرارت، ناحیة جوش و سطح مقطع جوش به کمک آزمون پلاریزاسیون تافل و روش طیف‌نگاری امپدانس الکتروشیمیایی، بررسی شده و نتایج حاصل مورد مقایسه قرار گرفته است. نتایج نشان می‌دهد که رفتار خوردگی در اتصالات، از سرعت چرخش ابزار تأثیر پذیر بوده و نواحی جوش و متأثر از حرارت، مقاومت در برابر خوردگی ضعیف‌تری نسبت به فلزات پایه داشته‌اند.

کلیدواژه‌ها

جوشکاری همزن اصطکاکی؛ تیتانیوم خالص تجاری؛ آلومینیوم 5083؛ خواص مکانیکی؛ رفتار خوردگی

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