The requirement for retained austenite content in the carburized or carbonitrided case will vary with the type of product.
不同产品对残余奥氏体量的要求量是不同的，可采用相应的热处理工艺进行控制。
2
The unsuitable carbonitriding process, internal oxidation, over deep depth of carbonitrided layer and crust like C N compound on the surface are the main reasons to cause fracture.
碳氮共渗工艺选择不当，共渗层过深，表面出现壳状碳氮化合物、内氧化等缺陷组织是造成其断裂的主要原因。
3
The B is obviously redistributed in B steel within the whole carbonized and carbonitrided case because of the interaction between B with N and C during carbonizing and carbonitriding.