Analysis of aging of mild steels based on bending tests
Abstract
The formability of mild steel sheets can deteriorate even after a short storage period due to the strain aging phenomenon. Since the aging dynamics are not uniform, the mechanical properties of steel sheets from the same batch can also differ from each other, which can cause frequent parameter readjustment, longer cycle times, and increased scrap formation in automatic processing equipment. In our paper, we present a bend test method for the processing industry that reliably indicates aging. In our experiments, DC01 sheet metal specimens were subjected to bend tests at ten time intervals after their manufacture. In order to ensure an appropriate level of sensitivity of the test, the evaluation criteria were extended compared to the standard requirements, which resulted in a cost-effective test method.
References
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