中厚板表层超细晶对止裂性能的影响 |
Effect of Surface Layer with Ultrafine Grains on Crack Arrestability of Heavy Plate |
图4 TRRP钢中间坯水冷返温过程不同厚度位置的组织相变过程 |
Fig.4 Phase transformation behavior of microstructure through thickness of TRRP steel intermediate slab during water cooling and reverting (SUF—surface layer with ultrafine-grained microstructure, A—austenite, B—bainite, F—ferrite, P—pearlite, Ac1—austenite transformation beginning temperature during calefaction, Ac3—austenite transformation finish temperature during calefaction, Tuf—critical temperature for ultra-fine grain forming) |
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