کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7981783 | 1514753 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hot deformation characteristics of a nitride strengthened martensitic heat resistant steel
ترجمه فارسی عنوان
ویژگی های تغییر شکل داغ نیترویید فولاد مقاوم در برابر حرارت مارتنزیتی را تقویت می کند
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کلمات کلیدی
فولاد، مشخصات مکانیکی، مارتنزیت، پردازش حرارتی مکانیکی، بازپرداخت، تبدیل فاز،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Constitutive equations including an Arrhenius term have been applied to analyze the hot deformation behavior of a nitride-strengthened (NS) martensitic heat resistant steel in temperature range of 900-1200 °C and strain rate range of 10â3-10 sâ1. On the basis of analysis of the deformation data, the stress-strain curves up to the peak were divided into four regions, in sequence, representing four processes, namely hardening, dynamic recovery (DRV), dynamic strain induced transformation (DSIT), and dynamic recrystallization (DRX), according to the inflection points in âθ/âÏ and â(âθ/âÏ)/âÏ curves. Some of the inflection points have their own meanings. For examples, the minimum of âθ/âÏ locates the start of DRV and the maximum of it indicates the start of DRX. The results also showed that the critical strain of DRX was sensitive to ln(Z) below 40, while the critical stress of DRX was sensitive to it above 40. The final microstructures under different deformation conditions were analyzed in terms of softening processes including DRV, DRX, metadynamic crystallization (MDRX) and DSIT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 590, 10 January 2014, Pages 199-208
Journal: Materials Science and Engineering: A - Volume 590, 10 January 2014, Pages 199-208
نویسندگان
Wen-Feng Zhang, Xiao-Li Li, Wei Sha, Wei Yan, Wei Wang, Yi-Yin Shan, Ke Yang,