scholarly journals Hybrid parts produced by deposition of 18Ni300 maraging steel via selective laser melting on forged and heat treated advanced high strength steel

2020 ◽  
Vol 32 ◽  
pp. 101108 ◽  
Author(s):  
Ludmila Kučerová ◽  
Ivana Zetková ◽  
Štěpán Jeníček ◽  
Karolína Burdová
Keyword(s):  
Maraging Steel ◽  
Selective Laser Melting ◽  
High Strength Steel ◽  
High Strength ◽  
Advanced High Strength Steel ◽  
Laser Melting ◽  
Heat Treated ◽  
Hybrid Parts

Investigation on Microstructure Evolution and Strengthening Mechanism in Boron-Bearing Advanced High Strength Steel

2019 ◽  
Vol 1156 ◽  
pp. 25-33
Author(s):  
Tao Jia ◽  
Jie Li ◽  
Li Ma
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Tensile Tests ◽  
Strengthening Mechanism ◽  
Advanced High Strength Steel ◽  
X Ray Diffraction ◽  
Electron Backscattered Diffraction ◽  
Electron Probe Micro Analyzer ◽  
Heat Treated ◽  
Evolution Of Microstructure

Investigation on the casting, hot-rolling and heat treatment process of a high boron-bearing advanced high strength steel was conducted. The scanning electron microscopy (SEM), electron-probe micro-analyzer (EPMA), electron backscattered diffraction (EBSD) and X-ray diffraction (XRD) were employed to analyze the evolution of microstructure which includes the phase constitution and boride morphology during hot processing. Through the control of as-casted, heat treated microstructure and using interrupted tensile tests, the strengthening mechanism was revealed. Results showed that, the strain-induced ferrite transformation of austenite and grain size were the decisive factors which control the strength and ductility, while the defects and internal stress etc. were the secondary factors.

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