结果表明，碳化物分布不均匀导致调质处理后在钻杆接头中产生“带状组织”。
The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and hightemperature tempered.
结果表明，碳化物分布不均匀导致调质处理后在钻杆接头中产生“带状组织”。
The results revealed that the non homogeneous distribution of the carbide caused the "zonal structure" appeared in the joint of drill rod which is hardened and high temperature tempered.
观察显微组织发现，失效模具的显微组织中明显存在不均匀带状分布的碳化物。
The cause of fracture failure was researched. The results show that many uneven carbide belts obviously distribute in the microstructure.
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