Features 01
Expected Problems
Aren't you having the following problems?
? When the application of UHSS is considered, the hydrogen embrittlement characteristics under actual environmental conditions are unknown.
? It's difficult to judge the relative superiority/inferiority of materials because the evaluation results in immersion tests are sometimes the reverse of those in the actual environment.
? There's no reliabilityy evaluation method that considers the in-vehicle operating environments (salt damage and temperature/humidity fluctuations).
Features 02
Technology highlight
? To simulate atmospheric corrosion, a repeated cycle of dry and wet conditions was adopted (Fig. 1).
? This method simulates the hydrogen absorption behavior of steel under applied stress in the actual corrosion environment (Fig. 2).
? Stable corrosion and hydrogen absorption conditions are maintained by specifying the amount of salt deposition.
? Possible to evaluate the risk of hydrogen embrittlement under conditions conforming to the actual environment (Fig. 3).
Features 03
Proposed Solutions (Examples)
Verification of the hydrogen embrittlement resistance of automotive ultra high strength steel sheets.
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