کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5455349 | 1514640 | 2017 | 51 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of heat-to-heat variations in metallurgy and hydrogen-metal interactions on the hydrogen embrittlement of Monel K-500
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The influence of heat-to-heat variations on the hydrogen embrittlement susceptibility of age-hardened Monel K-500 (UNS N05500) was evaluated through detailed characterization of metallurgical attributes and hydrogen interactions, coupled with notched tensile specimen embrittlement metrics. Four nominally peak-aged material heats of Monel K-500 were assessed using slow strain rate tensile (SSRT) testing while immersed in 0.6Â M NaCl solution and exposed to cathodic polarization levels ranging from â0.850 to â1.1 VSCE. Despite each of the four heats meeting the US Federal Procurement Specification QQ-N-286G, the hydrogen embrittlement susceptibility was found to vary extensively between the tested material heats. Characterization of microstructural features, composition, and hydrogen-metal interactions were performed to facilitate correlation between material property and susceptibility trends. Results suggest that subtle differences in grain boundary chemistry and H uptake behavior may contribute to heat-to-heat variations in hydrogen embrittlement susceptibility of Monel K-500. Conversely, parameters including yield strength, hydrogen diffusivity, hydrogen production rate, grain boundary character, and grain size do not independently control the observed variations in susceptibility. Based on these experimental results, a macroscale framework for assessing the degradation in fracture stress as a function of applied potential is proposed and possible avenues for framework improvement are suggested.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 703, 4 August 2017, Pages 533-550
Journal: Materials Science and Engineering: A - Volume 703, 4 August 2017, Pages 533-550
نویسندگان
B.C. Rincon Troconis, Z.D. Harris, H. Ha, J.T. Burns, J.R. Scully,