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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
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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
Journal: International Journal of Fatigue - Volume 27, Issue 2, February 2005, Pages 155-163
نویسندگان
F. Iacoviello,