کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1580379 1514841 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of strain-induced martensite on the formation of nanocrystalline 316L stainless steel after cold rolling and annealing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of strain-induced martensite on the formation of nanocrystalline 316L stainless steel after cold rolling and annealing
چکیده انگلیسی

This work aimed to study the effects of cold rolling temperature and pre-strain on the volume fraction of strain-induced martensite in order to obtain nanocrystalline structures of 316L stainless steel. Hot rolling and cold rolling followed by annealing treatments were conducted under different conditions. The microstructures and the volume fraction of phases were characterized by scanning electron microscopy and feritscope tests, respectively. The hardness and tensile properties of the specimens were also measured. The results showed that decreasing the rolling temperature while increasing pre-strain leads to increased the volume fraction of martensite accompanied by decreased saturating strain and, further, that this behavior affects the degree of grain refinement. The smallest grain size of about 30–40 nm was obtained via 30% pre-strain at 523 K and subsequent conventional cold rolling at 258 K with a strain and a strain rate of 95% and 0.5 s−1, respectively, followed by annealing at 1023 K for 300 s. Uniaxial tensile tests at room temperature showed that this specimen exhibits very high tensile strength of about 1385 MPa.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 519, Issues 1–2, 30 August 2009, Pages 46–50
نویسندگان
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