| 用超快速冷却新工艺生产GCr15轴承钢 |
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| 引用本文： | 孙艳坤,吴迪.用超快速冷却新工艺生产GCr15轴承钢[J].钢铁研究学报,2009,21(1):22-0. |
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| 作者姓名： | 孙艳坤 吴迪 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室,辽宁,沈阳,110004 |
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| 摘 要： | 通过对GCr15轴承钢高温终轧后进行冷却速度大于100 ℃/s的超快速冷却试验，研究了轧后不同冷却工艺制度对组织形态和网状碳化物的影响，结果表明，高温终轧后进行超快速冷却可抑制网状碳化物析出，发生伪共析转变而得到细片层间距的珠光体型组织——索氏体，并促进珠光体形核和减小碳原子扩散能力，达到细化晶粒的目的，得到利于球化退火的预备组织。
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| 关 键 词： | 轴承钢 超快冷却 过冷度 伪共析组织 网状碳化物 |
| 收稿时间： | 1900-01-01; |
GCr15 Bearing Steel Produced by Super-Rapid Cooling Technology |
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| SUN Yan-kun,WU Di.GCr15 Bearing Steel Produced by Super-Rapid Cooling Technology[J].Journal of Iron and Steel Research,2009,21(1):22-0. |
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| Authors: | SUN Yan-kun WU Di |
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| Affiliation: | State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China |
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| Abstract: | The influence of different cooling technology on microstructure and network carbide was studied in super rapid cooling experiment in which its cooling rate was higher than 100 ℃/s after high temperature rolling. The results indicated that the precipitation of network carbide can be restricted by super rapid cooling, fine laminar pearlite sorbite is obtained through pseudoeutectoid transformation which also promotes pearlite nucleation and reduces the diffusion effect of C, through which the grain is refined, and the microstructures suitable for spheroidizing annealing are obtained. |
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| Keywords: | bearing steel super??rapid cooling supercooling degree pseudopearlite network carbide |
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