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Iranian Journal of Materials Science and Engineering، جلد ۱۷، شماره ۳، صفحات ۶۰-۶۹
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عنوان انگلیسی Investigation on Microstructure Evolution of a Semi-Austenitic Stainless Steel Through Hot Deformation
چکیده انگلیسی مقاله Dynamic Recrystallization (DRX) is one of the likely mechanisms for fine-graining in metals and alloys. The dynamic recrystallization (DRX) phenomena occurs in different thermo-mechanical processing (TMP) conditions for various metallic materials. DRX depends on various materials and thermo-mechanical parameters such as temperature, strain rate, strain, stress and initial microstructure. in the present study, the restoration mechanism of the 17-7PH stainless steel has been investigated using a hot compression test under different conditions of thermo-mechanical treatment. The microstructural characteristics and the behavior of the hot deformation of the under study steel are investigated using flow curves and microstructure images obtained from optical microscopy. The results show that the maximum and steady state stresses are significantly affected by the strain rate and the deformation temperature. So that, the flow stress increases with decrease in the deformation temperature and increase in the strain rate. Microstructural studies confirm the occurrence of DRX as a restoration mechanism in the microstructure for the two phases of austenite and ferrite.
کلیدواژه‌های انگلیسی مقاله Dynamic Recrystallization, Thermo-mechanical processing, 17-7PH Stainless steel, Compression test.
نویسندگان مقاله | S. Mortezaei
Department of Metallurgical Engineering, Iran university of science & technology, Tehran, Iran


| H. Arabi
Department of Metallurgical Engineering, Iran university of science & technology, Tehran, Iran


| H. Seyedein
Department of Metallurgical Engineering, Iran university of science & technology, Tehran, Iran


| A. Momeny
Department of Metallurgical Engineering, Hamedan university of technology, Hamedan, Iran


| M. Soltanalinezhad
Department of Metallurgical Engineering, Amirkabir university of technology, Tehran, Iran
نشانی اینترنتی http://ijmse.iust.ac.ir/browse.php?a_code=A-10-2015-1&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده گروه مکانیکی و شکل دادن
نوع مقاله منتشر شده Research Paper
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