Effect of Heat Treatment on the Microstructure and Mechanical Property of x90 Bend Pipe

Abstract:

The microstructure and mechanical property of X90 parent material and weld were studied after the heat process of tempering (560°C) and quench (1000°C) + tempering (560°C), respectively. By the comparison of two different heat treatment processes, the effect of heat treatment for the microstructure and mechanical property of X90 parent material and weld was discussed. The results shown that the weld and heat-affected zone (HAZ) microstructure was improved after the heat process of quench (1000°C) + tempering (560°C), and the microstructure of HAZ was refined, which make the microstructure and mechanical property of X90 bend pipe parent and weld more similar, effectively. In addition, this paper also proved that the entire heating mode can effectively reduce the deterioration of microstructure and mechanical property caused by the bending process.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 1022-1027
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.1022
• Online since: March 2016
• Authors: Bin Wang, Liang Wang, Bo Bo Lei, Ming Xu
• Keywords: Heat Treatment, Mechanical Properties, Microstructure, X90 Bend Pipe

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