کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8955428 | 1646089 | 2018 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of microstructural refinement and intercritical annealing time on mechanical properties of high-formability dual phase steel
ترجمه فارسی عنوان
تاثیر پالایش میکروساختار و زمان انجماد انتقادی بر خواص مکانیکی فولاد دو مرحله ای بالا
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کلمات کلیدی
فولاد دو مرحله ای، پالایش دانه، توزیع مارتنزیت، ویژگی های مکانیکی، نرخ سخت شدن فشار،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
The impact of the intercritical annealing time and refinement of microstructure upon the tensile properties and work-hardening capacity of a dual phase (DP) steel were evaluated. For the undeformed pre-intercritical microstructures, the sensitivity of the obtained DP microstructures on the time of annealing was low, and in all cases, a relatively coarse microstructure was obtained. It was shown that a fine-grained DP steel with chain-network martensite morphology can be readily obtained by carefully controlled intercritical annealing of a cold deformed martensitic microstructure. By continued intercritical annealing beyond the optimum value, the growth of ferrite grains and fading of the chain-network martensite morphology were found to be responsible for the lowering of work-hardening rate and obtained tensile properties. By optimization of the intercritical annealing condition, a DP300/600 steel with high work-hardening rate, low yield ratio, high tensile toughness, and good ductility was obtained, which exhibited significant enhancements compared with the conventional DP350/600 grades.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 736, 24 October 2018, Pages 22-26
Journal: Materials Science and Engineering: A - Volume 736, 24 October 2018, Pages 22-26
نویسندگان
Mahsa Nouroozi, Hamed Mirzadeh, Mehran Zamani,