کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7981748 | 1514753 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modelling and design of stress-induced martensite formation in metastable β Ti alloys
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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: Modelling and design of stress-induced martensite formation in metastable β Ti alloys Modelling and design of stress-induced martensite formation in metastable β Ti alloys](/preview/png/7981748.png)
چکیده انگلیسی
The temperature dependence of the stress-induced martensite (SIM) formation in a Ti-10V-2Fe-3Al (Ti-1023) alloy under compressive loading has been studied. At low temperatures, the stress level at which martensite starts to form increases linearly with the deformation temperature, while the stress at which the deformation switches to regular plastic deformation is roughly temperature independent. A thermostatistical model for dislocation evolution is employed to describe deformation twinning in martensite. Combined effects of twinning induced plasticity and solid solution strengthening are considered in terms of temperature variations. The SIM effect disappears on deformation at temperatures beyond ~233°C, which is close to the predicted Ms temperature of 240 °C. The thermostatistical model predicts a transition from twinned martensite to pure slip at 250 °C. By providing a model to predict the martensite formation, and by describing deformation twinning, the present work provides a number of tools that may be employed to conceive new titanium alloys combining improved strength and ductility.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 590, 10 January 2014, Pages 140-146
Journal: Materials Science and Engineering: A - Volume 590, 10 January 2014, Pages 140-146
نویسندگان
Suresh Neelakantan, E.I. Galindo-Nava, David San Martin, Jesus Chao, P.E.J. Rivera-DÃaz-del-Castillo,