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脱碳层 [tuō tàn céng]
[化工] decarburized layer
ferrite banding
ferrite banding
- 灰铸铁、脱碳层和成分偏析共同导致模具断裂。
Grey cast iron and composition segregation result in the fracture of mould. - 热处理后熔合区的脆化主要是由增碳层与脱碳层引起的，熔合区的断裂机制为析出碳化物的无特征开裂及脱碳层的沿晶开裂。
After PWHT the embrittlement was mainly caused by the carbon enriched / depleted layers, and the fracture morphology was carbide and /or an intergranular fracture. - 认为吊卡锁舌断裂原因是断裂部位表面存在的脱碳层，降低了钢的强韧性，在使用过程中产生了疲劳裂纹。
Find that the main course is the fatigue crackle are formed during its using time because of there were decarburations on the surface of the fracture and induce the obdurability of steel.
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