کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1583283 1514885 2007 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrogen-assisted cracking of T-250 maraging steel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Hydrogen-assisted cracking of T-250 maraging steel
چکیده انگلیسی
Hydrogen-assisted cracking (HAC) of T-250 maraging steel has been studied. The results showed that HAC could occur in air when the relative humidity (RH) was ≥30%. The arrested threshold stress intensity factor, KIH (MPa m1/2), decreases linearly with increasing the logarithm of hydrogen concentration entered into the samples during putting in humid air or charging in the solution, C (ppm), i.e. KIH = 49.5-26.1 ln C. The threshold stress intensity factor for the crack initiating from notch tip in humid air with RH = 82%, KIH(ρ), increases with increasing the square root of notch radius ρ, as ρ > ρ0 = 0.08 mm, i.e. KIH(ρ>0.08 mm)=−32.7+244.9ρ, however, when ρ ≤ ρ0, KIH(ρ ≤  0.08 mm) = KIH = 37.5 MPa m1/2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 471, Issues 1–2, 15 December 2007, Pages 34-37
نویسندگان
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