首页> 外文期刊>Applied Surface Science >An investigation of the effect of pulse frequency in laser multiple-layer cladding of stainless steel
【24h】

An investigation of the effect of pulse frequency in laser multiple-layer cladding of stainless steel

机译:脉冲频率对不锈钢激光多层熔覆的影响研究

获取原文
获取原文并翻译 | 示例
           

摘要

The consolidation of metal powder onto a solid substrate using a laser beam allows fusion of the build material to be realised and fully-dense walls or surfaces, suitable for rapid prototyping and tooling applications, to be fabricated. The final wall geometry and microstructure of metals deposited in this way are determined in part by the pulse frequency of the laser beam used. A 1.2 kW CO_2 laser, operating over a range of different pulse frequencies is used to investigate this effect. Microstructural characterisation of multiple layers of consolidated 316L steel revealed a coarser, but less porous austenitic structure when using a pulsed beam. The final hardness of the steel increased with pulse frequency, but was not constant throughout the wall, and the surface roughness varied little.
机译:使用激光束将金属粉末固结在固体基板上,可以实现构建材料的融合,并制造出适合于快速原型设计和工具应用的全致密壁或表面。以这种方式沉积的金属的最终壁几何形状和微观结构部分取决于所用激光束的脉冲频率。使用1.2 kW CO_2激光器(在不同的脉冲频率范围内运行)来研究这种效果。使用脉冲束时,多层固结316L钢的微观结构表征显示出较粗糙但多孔的奥氏体组织。钢的最终硬度随脉冲频率的增加而增加,但在整个壁中不是恒定的,并且表面粗糙度变化很小。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号