بررسی خواص ریزساختاری و مکانیکی کامپوزیت چندلایه‌ی آلومینیم/مس/منیزیم تولید شده با استفاده از فرآیند پیوند سرد نوردی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس ارشد، دانشکده مهندسی مواد، دانشگاه صنعتی سهند، تبریز، ایران

2 کارشناس ارشد، گروه مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران

3 دانشجوی کارشناس ارشد، دانشکده مهندسی مواد، دانشگاه تهران، تهران، ایران

4 استادیار، گروه مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران

چکیده

در این پژوهش کامپوزیت لایه­ای آلومینیوم/مس/منیزیم با روش پیوند نوردی تولید شد. همچنین خواص مکانیکی، شکست­نگاری و ریزساختار با استفاده از آزمون کشش تک­محوره، میکروسختی، عکس­برداری از سطح مقطع شکست با استفاده از میکروسکوپ الکترونی روبشی و میکروسکوپ نوری مورد بررسی قرار گرفت. نتایج حاصل از آزمون­های انجام شده حاکی از افزایش استحکام و میکروسختی برای نمونه­ی کامپوزیتی آلومینیوم/مس/منیزیم نسبت به نمونه­های اولیه آلومینیوم، مس خالص و منیزیم است که عامل اصلی این افزایش اعمال کرنش زیاد و کار سرد می­باشد. استحکام کششی برای نمونه­ی تولید شده به  3/220 مگاپاسکال رسید که نسبت به نمونه­های اولیه آلومینیوم مس و منیزیم به ترتیب 144 %، 23 % و 29 % افزایش یافت. عکس­های میکروسکوپ الکترون روبشی نشان داد که سطح مقطع شکست لایه­های آلومینیم و مس نرم، در صورتیکه سطح مقطع شکست لایه منیزیم کاملا ترد است.

کلیدواژه‌ها

موضوعات


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