| 工艺参数对45钢激光表面强化组织与性能的影响 |
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| 引用本文： | 张峻巍,王画华,谢红委,吴法宇,郑兴.工艺参数对45钢激光表面强化组织与性能的影响[J].鞍山科技大学学报,2011(4). |
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| 作者姓名： | 张峻巍 王画华 谢红委 吴法宇 郑兴 |
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| 作者单位： | 辽宁科技大学材料与冶金学院;湖北新冶钢有限公司技术中心; |
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| 摘 要： | 通过改变激光功率和扫描速度等参数,研究其对45钢激光表面强化组织与性能的影响。实验结果表明,单道扫描时,当保持扫描速度v为15mm/s时,增加激光功率P,可增加硬化层的深度,最大深度可达1.5mm以上。另外,P/v比值越大,硬化层深度越大;而当P/v比值保持不变时,硬化层深度随着激光功率的增加而增加,其中激光功率从1.2kW到1.8kW时,硬化层深度值增加较快;当激光功率大于1.8kW后,深度值的增长随功率增加变缓;而且硬化层的硬度都达到700HV以上,远高于基体的硬度。在激光多道搭接扫描时,激光能量的再次输入会导致靠近搭接区的前一道硬化层产生回火软化,其硬度接近基体的硬度。
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| 关 键 词： | 45钢 激光表面强化 工艺参数 硬度 |
Effect of parameters on microstructure and performance of laser surface hardening for 45 steel |
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| ZHANG Jun-wei,WANG Hua-hua,XIE Hong-wei,WU Fa-yu,ZHENG Xing.Effect of parameters on microstructure and performance of laser surface hardening for 45 steel[J].Journal of Anshan University of Science and Technology,2011(4). |
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| Authors: | ZHANG Jun-wei WANG Hua-hua XIE Hong-wei WU Fa-yu ZHENG Xing |
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| Institution: | ZHANG Jun-wei1,WANG Hua-hua1,XIE Hong-wei1,WU Fa-yu1,ZHENG Xing2(1.School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,China,2.Technical Center of Xinyegang Steel Co.Ltd,Huangshi 435001,China) |
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| Abstract: | The effect of parameters on microstructure and performance of laser surface hardening for 45 steel is researched by changing the parameters such as laser power and scanning volocity.The results indicate that under the condition of one-track scanning of laser beam,with increasing laser power P,while keeping the travel velocity as a constant value of 15 mm/s,the depth of hardened layer increases and can be above 1.5 mm.The depth of hardened layer will also increase by increasing the ratio of P/v.When the rati... |
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| Keywords: | 45 steel laser surface hardening parameters hardness |
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