Study on the precipitation behavior of maraging stainless steel

Wu, Gaite1; Wang, Gang1; Wei, Shaopeng1; Wang, Junying1; Rong, Yiming2

10.7449/2017/MST-2017-924-931

2017

Materials Science and Technology Conference and Exhibition 2017, MS and T 2017

2

924-931

Pittsburgh, PA, United states

Association for Iron and Steel Technology, AISTECH

The laser cladding is employed as a remanufacturing method to repair worn or failed impellers which are made of FV520B steel, one kind of maraging stainless steels. The precipitation behavior has a significant effect on the mechanical property of the steel in the heat affected zone and clad layer. By Gleeble tests, effects of aging temperature and time on the yield strength were inspected. Further, relationship between strength and aging temperature at different aging time was formulated. According to XRD and SEM tests, the effect of the amount of precipitate on the yield strength was verified. The change rule of yield strength with aging temperature and the kinetic characteristics of precipitation of FV520B were explained. Results showed that aging treatment has better effect on FV520B steel at the temperature between 400°C and 600°C. Growth and coarsening of the precipitated phase will break the coherent relationship with matrix, as it will cause exsolution of precipitates and reduction in the material strength.
© Copyright 2017 MS&T17.

其他

EI

20182205265060

Aging of materials ; Behavioral research ; Heat affected zone ; Laser cladding ; Maraging steel ; Precipitates ; Yield stress

Welding:538.2 ; Steel:545.3 ; Laser Applications:744.9 ; Chemical Products Generally:804 ; Materials Science:951 ; Social Sciences:971

EV Compendex

1.Department of Mechanical Engineering, Tsinghua University, Beijing; 100084, China
2.Mechanical and Energy Engineering Department, Southern University of Science and Technology, Shenzhen; 518055, China

Wu, Gaite,Wang, Gang,Wei, Shaopeng,et al. Study on the precipitation behavior of maraging stainless steel[C]:Association for Iron and Steel Technology, AISTECH,2017:924-931.