کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582214 1514870 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cellular η phase precipitation and its effect on the tensile properties in an Fe–Ni–Cr alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Cellular η phase precipitation and its effect on the tensile properties in an Fe–Ni–Cr alloy
چکیده انگلیسی

The precipitation mechanism of cellular η phase at grain boundaries and its effect on the high temperature tensile properties in an Fe–Ni–Cr alloy were investigated by using TEM, SEM, EBSD and tensile testing. It was revealed that η phase nucleates at high energy grain boundaries and has a coherent orientation relationship with the austenite matrix: {0 0 1}η//{1 1 1}γ, <2 1 0>η//<1 1 0>γ. The cellular austenite in the vicinity of the η phase has the same orientation as the grain from which the η phase growth starts. The formation of cellular austenite is suggested to proceed by grain boundary migrating with precipitated η phase into the neighboring grain which is incoherent with the η phase. The precipitation of cellular η phase at grain boundary improves the high temperature ductility of the alloy dramatically.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 488, Issues 1–2, 15 August 2008, Pages 547–553
نویسندگان
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