期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.08.003
关键词
Hydrogen embrittlement; Press hardening steel; Hot press forming; Aluminizing
类别
资金
- POSCO Technical Research Laboratories, Gwangyang
The use of press hardening steel (PHS) in structural safety-related parts has experienced a rapid growth in the automotive industry, due to increased passenger safety standards, which require an improved vehicle intrusion resistance. Very small concentrations of diffusible hydrogen in ultra-high strength PHS deteriorate their mechanical properties. The focus of the present study was the analysis of the diffusible hydrogen uptake during the hot press forming process of the aluminized PHS and its impact on the mechanical properties of PHS. The effect of the paint baking on the properties of aluminized PHS was also evaluated by mechanical testing and hydrogen thermal desorption analysis. A mechanism for the hydrogen absorption of aluminized PHS was proposed.
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