scholarly journals Effect of Morphological Differences on the Cold Formability of an Isothermally Heat-Treated Advanced High-Strength Steel

JOM ◽  
2018 ◽  
Vol 70 (8) ◽  
pp. 1567-1575 ◽  
Author(s):  
Irmgard Weißensteiner ◽  
Clemens Suppan ◽  
Thomas Hebesberger ◽  
Florian Winkelhofer ◽  
Helmut Clemens ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Advanced High Strength Steel ◽  
Heat Treated ◽  
Morphological Differences

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.

On the local evaluation of the hydrogen susceptibility of cold-formed and heat treated advanced high strength steel (AHSS) sheets

2021 ◽  
Vol 800 ◽  
pp. 140276 ◽  
Author(s):  
A. Drexler ◽  
C. Bergmann ◽  
G. Manke ◽  
V. Kokotin ◽  
K. Mraczek ◽  
...  
Keyword(s):  
High Strength Steel ◽  
High Strength ◽  
Advanced High Strength Steel ◽  
Heat Treated
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