کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1447334 988642 2011 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanisms of void formation during tensile testing in a commercial, dual-phase steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Mechanisms of void formation during tensile testing in a commercial, dual-phase steel
چکیده انگلیسی

A detailed analysis of the microstructure and failure mechanism of a dual-phase steel material as a function of strain was conducted. Accordingly, three tensile tests were performed and interrupted at different strain levels in order to investigate void nucleation, void growth and void coalescence. Scanning electron microscopy analysis revealed that void nucleation occurs by ferrite grain-boundary decohesion in the neighborhood of martensite grains. Further, void initiation could be observed between closely situated martensite grains. Martensite morphology and distribution has a significant impact on the accumulation of damage. The mechanism of failure was found to be influenced by deformation localization due to microstructural inhomogeneity. Based on the experimental observations and simulation results, a model describing the failure mechanism is proposed for dual-phase steel material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 59, Issue 7, April 2011, Pages 2575–2588
نویسندگان
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