Experimental Study on High Temperature Creep Damage of 1Cr5Mo Steel Based on Magnetic Parameters

Abstract:

Aiming at the evaluation of creep damage at elevated temperature of ferromagnetic materials in engineering application, the hysteresis loop measurement technology was adopted to study the creep damage behaviour of 1Cr5Mo steel. The creep testing at 600°C/90MPa of 1Cr5Mo steel were carried out to prepare specimens with various degrees of creep damage. The variation of magnetic parameter including coercivity (H_C) and remanence (Br) with creep damage was analyzed. The microstructure evolution of 1Cr5Mo steel with different degrees of creep damage was observed by optical microscope. The results show that the coercivity and remanence show certain regularity with creep damage at elevated temperature. Moreover, the regularity is repeatable which indicates that the measurement technology based on magnetic parameters can be used for the evaluation of high temperature creep damage.

• Periodical: Key Engineering Materials (Volume 795)
• Pages: 194-199
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.795.194
• Online since: March 2019
• Authors: Guang Xing Gao, Shan Shan Shao, Gong Tian Shen, Fa Kun Zhuang*, Zhi Feng Li
• Keywords: 1Cr5Mo Steel, Coercivity, High Temperature Creep, Microscopic Damage, Remanence

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