The crack initiates at stress concentration point in the root of weld, where has much more martenite, carbide and inclusion, and the serious hydrogen segregation.
裂纹均
根部应力集中处萌
，该处马氏体含量比
大，碳化物及夹杂物多，氢的偏聚现象严重。
The crack initiates at stress concentration point in the root of weld, where has much more martenite, carbide and inclusion, and the serious hydrogen segregation.
裂纹均根部应力集中处萌，该处马氏体含量比大，碳化物及夹杂物多，氢的偏聚现象严重。
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