کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1579568 | 1514829 | 2010 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Constitutive equations for prediction of the flow behaviour of duplex stainless steels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Constitutive equations for prediction of the flow behaviour of duplex stainless steels Constitutive equations for prediction of the flow behaviour of duplex stainless steels](/preview/png/1579568.png)
چکیده انگلیسی
The high temperature workability of a 2205 duplex stainless steel has been investigated by torsion testing between 950 and 1200 °C. The constitutive equations relating peak flow stress, temperature and strain rates were obtained, and the composite model, where austenite and ferrite are the hard and soft phases, respectively, was found to give an excellent description of the experimental data. The peculiar shape of the equivalent stress vs. equivalent strain flow curves has been discussed; a model based on the hypothesis that during torsion of wrought duplex stainless steels the load transfer from ferrite and austenite is delayed to a later stage of the straining process has been developed, and successfully used to describe the experimental data. Thus it was concluded that during the early stage of the tests the deformation is inhomogeneous, since strain accumulates in ferritic regions, while austenite is almost undeformed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issues 16â17, 25 June 2010, Pages 4218-4228
Journal: Materials Science and Engineering: A - Volume 527, Issues 16â17, 25 June 2010, Pages 4218-4228
نویسندگان
S. Spigarelli, M. El Mehtedi, P. Ricci, C. Mapelli,