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
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
نویسندگان
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