Detection and Determination of Solute Carbon in Grain Interior to Correlate with the Overall Carbon Content and Grain Size in Ultra-Low-Carbon Steel

作者：Dong Jiling; He Yinsheng; Lee Chan Gyu; Lee Byungho; Yoon Jeongbong; Shin Keesam^*

来源：Microscopy and Microanalysis, 2013, 19(S5): 66-68.

DOI：10.1017/S143192761301235X

• ultra-low-carbon steel
• solute carbon
• atom by atom analysis
• grain size
• TEM
• 3DAP

In this study, every effort was exerted to determine and accumulate data to correlate microstructural and compositional elements in ultra-low-carbon (ULC) steels to variation of carbon content (12-44 ppm), manganese (0.18-0.36%), and sulfur (0.0066-0.001%). Quantitative analysis of the ULC steel using optical microscope, scanning electron microscope, transmission electron microscope, and three-dimensional atom probe revealed the decrease of grain size and dislocation density with the increase of carbon contents and/or increase of the final delivery temperature. For a given carbon content, the grain interior carbon concentration increases as the grain size increases.

• 出版日期2013-8
• 单位重庆科技学院