کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455847 | 1514641 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties of hot-rolled and heat-treated TRIP steel with direct quenching process
ترجمه فارسی عنوان
ریزپردازنده و خواص مکانیکی فولاد ضد زنگ گرم فولاد ضد زنگ و گرم با روند مستقیم خنک سازی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
In the present study, a hot-rolled and heat-treated TRIP steel (Fe-0.25C-1.23Si-2.09Mn-2.92Al wt%) was successfully produced by a simple process that involved intercritical heat treatment (IHT) followed by direct quenching without bainite reaction step. The microstructure of the as-cast ingot, as-hot-rolled sheet and heat-treated sheet was studied and related to mechanical properties of the heat-treated sheet. It was observed that δ-ferrite was retained from the solidification stage and remained as a stable phase during different stages of processing because of the alloy design that included ~ 3 wt% Al. Banded structure was obtained in both as-hot-rolled sheet and heat-treated sheet. The microstructure of 770-820 °C heat-treated sheet consisted of δ-ferrite, retained austenite (RA), α-ferrite and martensite. Based on the alloy design and direct quenching process, ~ 20-30% volume fraction of RA was obtained in the heat-treated sheet. The 780 °C heat-treated sheet exhibited an excellent combination of tensile strength and total elongation of 880 MPa and 28%, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 702, 15 August 2017, Pages 350-359
Journal: Materials Science and Engineering: A - Volume 702, 15 August 2017, Pages 350-359
نویسندگان
He-song Wang, Jian Kang, Wei-xue Dou, Yuan-xiang Zhang, Guo Yuan, Guang-ming Cao, R.D.K. Misra, Guo-dong Wang,