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Abstract：
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High strength haked-hardening(BH)steel is a high strength steel for auto-panel.The mechanical property, forming ability,baked-hardening and dent resistance properties of high strength steel B180H1 were studied by experi- ments compared with those of steel DC04,and theoretical research on predicting the forming limit of steel B180H1 by the NADDRG model was made.The experimental results reveal that the yield strength of steel B180H1 is about 40.8% higher than that of DC04,and the break strength increases by 18.4%,while the elongation decreases by 15.6%.The plastic strain ratio and strain hardening exponent of steel B180H1 are superior to those of DC04.The re- suits show that mechanical property of high strength steel B180H1 is better than that of DC04,while forming ability of B180H1 is not lower than that of DC04.The baked-hardening and dent resistance properties of steel B180H1 are better than those of DC04.
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Funds：
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天津市科技支撑计划项目，(07ZCKFGX02400)
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AuthorIntro：
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Reference：
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