Microstructural changes due to laser surface melting of an AISI 304 stainless steel
Microstructural changes due to laser surface melting of an AISI 304 stainless steel
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AISI 304 不锈钢激光表面熔化导致的微观结构变化
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
R. Vilar
中科院分区：
文献类型：
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作者：
A. D’Oliveira;R. Paredes;F. Wéber;R. Vilar
可以使用多种技术来改善表面特性。这些可能涉及表面化学成分（例如合金化和表面焊接工艺）或表面微观结构（例如硬化和熔化）的变化。在目前的工作中，使用 3kW CO2 连续激光器进行表面熔化，以改变 AISI 304 不锈钢的表面特征。通过光学和扫描电子显微镜进行微观结构表征。维氏和努氏显微硬度测试评估了表面熔化后的机械特性。对快速凝固过程中的相变进行了分析和讨论。
Several techniques can be used to improve surface properties. These can involve changes on the surface chemical composition (such as alloying and surface welding processes) or on the surface microstructure, such as hardening and melting. In the present work surface melting with a 3kW CO2 cw laser was done to alter surface features of an AISI 304 stainless steel. Microstructure characterisation was done by optical and scanning electron microscopy. Vickers and Knoop microhardness tests evaluated mechanical features after surface melting. Phase transformation during rapid solidification is analysed and discussed.