在试验的焊接条件下，WCX355超细晶钢在热影响粗晶区未有明显脆化，在回火区也未发生软化现象。
Under the experiment's welding condition, WCX355 ultrafine grained steels didn't distinctly embrittle in CGHAZ and didn't soften in tempering zone either.
韧化机制为细晶韧化、裂纹偏转、裂纹分支和微桥接。
Their toughening mechanisms were fine-grain toughening, crack deflection, crack branching and crack microbridging.
以煤系高岭岩为原料，采用水热晶化法合成超细莫来石粉。
Mullite particles was synthesized by hydrothermal crystallization from kaolinite in coal measures.
以煤系高岭岩为原料，采用水热晶化法合成超细莫来石粉。
Mullite particles was synthesized by hydrothermal crystallization from kaolinite in coal measures.
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