کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7981445 | 1514747 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of carbon content on hot deformation behaviors of vanadium microalloyed steels
ترجمه فارسی عنوان
تأثیر محتوای کربن بر رفتارهای تغییر شکل گرم فولادهای میکرولیز وانادیوم
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کلمات کلیدی
فولاد میکرول وانادیوم، اثر کربن، رفتار تغییر شکل داغ، دوباره سازی دینامیک،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
The compressive deformation behaviors of a low carbon vanadium microalloyed steel and a medium carbon vanadium microalloyed steel were investigated at the temperatures from 900 °C to 1100 °C and strain rates from 0.005 sâ1 to 10 sâ1 on Gleeble-1500 thermo-mechanical simulator. It was found that increasing the carbon content of vanadium microalloyed steels decreased the flow stress at lower strain rates, whilst at higher strain rates carbon addition led to higher flow stress, especially at the initial stage of deformation. The flow stress constitutive equations of hot deformation were developed for the experimental steels; results showed that carbon addition has the trend to reduce the hot deformation activation energy. The dependence of the characteristic points under different deformation conditions on the Zener-Hollomon parameter and the relationship between critical strain (critical stress) and peak strain (peak stress) of the experimental steels were analyzed, and the results were in reasonable agreement with those reported before. The work hardening behavior of both steels was investigated and it was found that carbon addition can decrease the work hardening rate when strained at lower strain rates. Dynamic recrystallization analysis showed that carbon addition can accelerate the occurrence and the rate of dynamic recrystallization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 596, 24 February 2014, Pages 112-120
Journal: Materials Science and Engineering: A - Volume 596, 24 February 2014, Pages 112-120
نویسندگان
Hai-lian Wei, Guo-quan Liu, Hai-tao Zhao, Ming-he Zhang,