کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9704014 1463873 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure influence on fatigue crack propagation in sintered stainless steels
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Microstructure influence on fatigue crack propagation in sintered stainless steels
چکیده انگلیسی
Monophasic and multiphasic (two phases or three phases) sintered stainless steels were prepared both considering premixes of AISI 316LHC and AISI 434LHC stainless steels powders and using a duplex stainless steel 25% Cr 5% Ni 2% Mo powder, and their fatigue crack propagation resistance was investigated considering three different stress ratios. Fatigue crack propagation micromechanisms were investigated by means of both a fracture surface scanning electron microscope (SEM) analysis and a fracture surface roughness evolution investigation. Comparing the obtained experimental results with the fatigue crack propagation resistance of a rolled duplex stainless steel, it is possible to identify the sintered stainless steel obtained from the 25% Cr 5% Ni 2% Mo powder as the most interesting. In fact, it is characterized by a fatigue crack propagation resistance that is comparable with the performances of rolled duplex stainless steels, both in stage I (threshold stage) and, partially, in stage II (Paris stage).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 27, Issue 2, February 2005, Pages 155-163
نویسندگان
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