کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10142017 | 1646089 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructural bandings evolution behavior and their effects on microstructure and mechanical property of super-austenitic stainless steel
ترجمه فارسی عنوان
رفتار تکاملی میکرو سازه و اثرات آن بر ریزساختار و خواص مکانیکی فولاد ضد زنگ فوق العاده آستنیتی
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کلمات کلیدی
فولاد ضدزنگ فوق العاده آستنیتی، باندهای میکرو سازنده، راه حل درمان، شبکه ی تصادفی، اسلب ریخته گری مداوم، مرحله سیگما،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Bands were cut from surface and center sections (denoted as SS and CS, respectively) from a super-austenitic stainless steel cast slab, and were hot rolled to be 3â¯mm thick plates under the same conditions. It was found that the SS hot-rolled plate possesses different microstructural bandings (MSBs) from those in the CS plate. Formation mechanisms of MSBs and precipitates during hot rolling and their evolution behavior during solution treatments (1000-1150â¯â for 30âmin) were investigated. The results show that the SS plate has slight MSBs with no precipitates, while the CS plate has high density of MSBs consisted of massive Ï phases. The MSBs in SS and CS plates were found to be vanished after solution treatments at 1000ââ and 1100ââ, respectively. Also, length fractions of low-ΣCSL boundaries of Σ3, Σ9 and Σ27 in both SS and CS plates were observed to increase and then decrease with increasing temperatures. The MSBs could have affected the evolution of grain boundaries, and changed the length ratio of CSL boundaries to the total grain boundaries. Numerous zonal structures composed of fine grains were observed in CS plates after solution treatment. Precipitates inside the MSBs could retard the boundaries movement during recrystallization to refine the grain. Tensile tests indicate that the strength of hot-rolled and solution-treated CS plates was higher than that of SS plates by 2-7%, and the elongation reduced by 2-5%. The main reasons were that the smaller average grain sizes and the precipitates in MSBs of CS plates enhanced the strength but the precipitates deteriorated the elongation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 736, 24 October 2018, Pages 258-268
Journal: Materials Science and Engineering: A - Volume 736, 24 October 2018, Pages 258-268
نویسندگان
Yansen Hao, Wanchun Liu, Jian Li, Baoxin Nie, Weina Zhang, Zhenyu Liu,