| M2高速钢激光表面钴合金化的研究 |
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| 引用本文： | 石功奇,丁培道.M2高速钢激光表面钴合金化的研究[J].金属热处理,1995(5):6-9,24. |
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| 作者姓名： | 石功奇 丁培道 |
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| 作者单位： | 重庆大学冶金及材料工程系!重庆630030 |
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| 摘 要： | 研究了Ｍ２高速钢激光表面Ｃｏ合金化的组织和性能。着重分析了激光工艺参数对合金化层中Ｃｏ浓度的影响。结果表明，采用激光表面合金化，可使Ｍ２高速钢表面Ｃｏ浓度在２％－５％。合金化层听Ｃｏ浓度主要与激光扫描速度和预沉积的Ｃｏ的厚度有关。退火态的Ｍ２高速钢在激光Ｃｏ合金化后，硬度可达８００ＨＶ。经淬火回火处理后，硬度可达１１５０ＨＶ，明显高于未进Ｃｏ合金化的Ｍ２高速钢。
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| 关 键 词： | 高速钢 激光热处理 表面合金化 钴 |
Study on Laser Surface Alloying of M2 High Speed Steel with Cobalt Powder |
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| Shi Gongqi, Ding Peidao, Liu Jianglong,Zhou Shouze.Study on Laser Surface Alloying of M2 High Speed Steel with Cobalt Powder[J].Heat Treatment of Metals,1995(5):6-9,24. |
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| Authors: | Shi Gongqi Ding Peidao Liu Jianglong Zhou Shouze |
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| Affiliation: | Shi Gongqi; Ding Peidao; Liu Jianglong;Zhou Shouze |
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| Abstract: | The microstructure and hardness of laser surface alloyed M2 high speed steel with cobalt have been studied in this paper. It has been found that about 2%~5%wt cobalt can be obtained in the surface of M2 high speed steel with laser surface alloying. The cobalt content in laser alloyed zone is related to the laser parameters and the precoated cobalt thickness. The hardness in laser alloyed zone of annealed M2 high speed steel is about 800HV. The hardness can be increased to about 1150HV after post quenching and tempering treatment. |
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| Keywords: | M2 high speed steel laser surface alloying microstructure properties |
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