Effect of the Aging Treatment on the Precipitates and Vickers Hardness of Friction Welded Super304H Joints

2018 4th International Conference on Mechanical Engineering and Automation Science

机械制造;原子能学

Yuan, Lu^1 ; Debiao, Li^1 ; Jianlong, Zhang^1^2 ; Kang, Shang^1 ; Yang, Yang^1 ; Bo, Cao^1

Xi'An Special Equipment Inspection Institute, Xi'an

710065, China^1

School of Mechanical Engineering, Xi'An University of Science and Technology, Xi'an

710054, China^2

关键词: Aging treatment;    Precipitated phase;    X ray diffraction profile;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/470/1/012029/pdf
DOI  :  10.1088/1757-899X/470/1/012029

来源: IOP

【 摘 要 】

In this paper, the precipitates and vickers hardness of the friction welded Super304H joints were studied after aging at 625° C for different time. Cr23C6 and NbC is denoted precipitated phases in the X-ray diffraction profiles. Precipitation, growth and aggregation of the Cr23C6 carbides were the main precipitated phase evolution mechanism. The Vickers hardness of the joints increased firstly, than decreased when after aged for 500 h, this is attributed to the aggregation and growth of the M23C6.