弹簧碾尖部位组织与弹簧其它部位组织不同，存在淬火屈氏体组织。
The structure of spring tine is not the same with that of any other parts and there is quenching.
结果表明，活塞杆在磁粉探伤中显现的螺旋形磁粉堆积线是由热处理缺陷一屈氏体软带造成的。
The result proves that the accumulate line is caused by heat treatment defect, soft troostite tape.
通过金相、性能和热处理试验，对盘条拉丝断裂原因进行了分析，认为盘条存在屈氏体组织是断裂的根本原因。
The mechanical properties testing, microstructure observation and fractographic features analysis of the troostite high chromium cast iron blade were carried out.
用砂型和金属型铸造时，加入微量铝可使含碳量在2.6～3.0％的中碳铸态材质得到屈氏体基体，并有较好的综合性能。
The addition of traces of Al could make the materials containing C ranged from 2.6-3.0% obtain troostite matrix both in sand molds and in metal, sand the materials have good synthetic properties.
用砂型和金属型铸造时，加入微量铝可使含碳量在2.6～3.0％的中碳铸态材质得到屈氏体基体，并有较好的综合性能。
The addition of traces of Al could make the materials containing C ranged from 2.6-3.0% obtain troostite matrix both in sand molds and in metal, sand the materials have good synthetic properties.
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