کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1570561 | 1514369 | 2016 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure characteristics of the ã111ã oriented grains in a Fe-30Ni-Nb model austenitic steel deformed in hot uniaxial compression
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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: Microstructure characteristics of the ã111ã oriented grains in a Fe-30Ni-Nb model austenitic steel deformed in hot uniaxial compression Microstructure characteristics of the ã111ã oriented grains in a Fe-30Ni-Nb model austenitic steel deformed in hot uniaxial compression](/preview/png/1570561.png)
چکیده انگلیسی
The work presents a detailed investigation of the microstructure characteristics of the ã111ã oriented grains in a Fe-30Ni-Nb austenitic model steel subjected to hot uniaxial compression at 925 °C at a strain rate of 1 sâ 1. The above grains exhibited a tendency to split into deformation bands having alternating orientations and largely separated by transition regions comprising arrays of closely spaced, extended sub-boundaries collectively accommodating large misorientations across very small distances. On a fine scale, the ã111ã oriented grains typically contained a mix of “microbands” (MBs) closely aligned with {111} slip planes and those significantly deviated from these planes. The above deformation substructure thus markedly differed from the microstructure type, comprising strictly non-{111} aligned MBs, expected within such grains on the basis of the uniaxial compression experiments performed using aluminium. Both the crystallographic MBs and their non-crystallographic counterparts typically displayed similar misorientations and formed self-screening arrays characterized by systematically alternating misorientations. The crystallographic MBs were exclusively aligned with {111} slip planes containing slip systems whose sum of Schmid factors was the largest among the four available slip planes. The corresponding boundaries appeared to mainly display either a large twist or a large tilt component.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 118, August 2016, Pages 382-396
Journal: Materials Characterization - Volume 118, August 2016, Pages 382-396
نویسندگان
Debasis Poddar, Pavel Cizek, Hossein Beladi, Peter D. Hodgson,