| Title |
Effects of Grain Size on Carbon Diffusion in an Ultra-Low Carbon Steel for Hot Press Forming |
| DOI |
https://doi.org/10.3365/KJMM.2012.50.12.883 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
HPF (hot press forming); carbon diffusion; ultra Low carbon steel; martensite; carbon diffusion model |
| Abstract |
Carbon diffusion of ultra low carbon steel treated at 880℃ and 930℃ for 10, 30, 60 and 120 minutes was investigated using optical microscopy, SAM, EPMA, and Micro Vickers. The martensite patterns of the specimens treated at 880℃ and 930℃ were different. Martensite in the ferrite region was found in the specimen treated at 880℃ because of grain boundary diffusion. Such phenomena is explained by a carbon diffusion model. |