Steady State Creep Characteristics of a Ferritic Steel at Elevated Temperature: An Experimental and Numerical Study

سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 184

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شناسه ملی سند علمی:

JR_ADMTL-11-4_013

تاریخ نمایه سازی: 13 اردیبهشت 1400

چکیده مقاله:

Prediction of creep life for a ferritic steel plate is significant in the context of its application as an element of steam generating systems. In this paper, the issue of elevated temperature creep in ۲.۲۵Cr–۱Mo steel was investigated in detail, including the mechanism and the compatibility of hyperbolic sine modeling methodology for the description of steady state creep behavior of this alloy. Creep rupture tests were conducted on the thin foil samples at an elevated temperature ranging from ۹۷۳ to ۱۰۷۳ K at various stresses between ۹۰ to ۲۱۰ MPa. A hyperbolic sine model is then used to fit the experimental creep data and the corresponding best fit parameters are provided. Using these parameters, a finite element analysis employing ABAQUS was carried and the reliability of the hyperbolic sine model was investigated in relation to the creep curve and creep life in the steady state creep area. The main outcome of the current study is creep characterisation of            ۲.۲۵Cr–۱Mo steel foils at extreme elevated temperature and to propose a finite element model for simulating this condition which is not reported so far. The results of experimental, constitutive analysis and finite element simulation were compared to each other and it was shown that they are in a good agreement.

نویسندگان

Roozbeh Alipour

Department of Mechanical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

Ali Farokhi Nejad

Dipartimento di ing. Meccanica e Aerospaziale, Politecnico di Torino, Corso Duca degli Abruzzi, Torino, Italy

Hamid Nilsaz Dezfouli

Department of Industrial Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

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