A thermodynamic model on predicting density of medium-Mn steels with experimental verification
A new model on predicting the density of hot-rolled multi-phased medium-Mn steel has been presented on the basis of thermodynamic calculations.This is an integrated model,which includes one for calculating the retained austenite(RA)fraction and the other for volume expansion during the austenite-to-...
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| Published in | 钢铁研究学报：英文版 no. 11; pp. 1078 - 1084 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
2017
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| Online Access | Get full text |
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| Summary: | A new model on predicting the density of hot-rolled multi-phased medium-Mn steel has been presented on the basis of thermodynamic calculations.This is an integrated model,which includes one for calculating the retained austenite(RA)fraction and the other for volume expansion during the austenite-to-martensite transformation,because both of them are key parameters for calculating the density of steel at ambient temperature.The existing empirical equations for calculating M s temperature and lattice constants of both martensite and austenite have been all reassessed by the XRD measurements on the microstructures of seven hot-rolled medium-Mn steels.Finally,the densities of seven steels were calculated merely from compositions and compared with the measured ones.The difference between them is no more than 1%,suggesting that the presented model should be of good value in designing the low-density steels. |
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| Bibliography: | 11-3678/TF |
| ISSN: | 1006-706X 2210-3988 |