• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Materials >Microstructure and Wear Behavior of Laser Cladded Ni45 + High-Carbon Ferrochrome Composite Coatings
【2h】

Microstructure and Wear Behavior of Laser Cladded Ni45 + High-Carbon Ferrochrome Composite Coatings

机译：激光熔覆Ni45 +高碳铬铁复合涂层的组织和磨损行为

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A composite coating with enhanced mechanical properties including high hardness and excellent wear resistance was produced by laser cladding of mixed Ni45 and high-carbon ferrochrome powders on an ASTM 1045 steel substrate. Different quantities, ranging from 10 to 50 wt.% of high-carbon ferrochrome powder were added to the Ni45 powder to investigate the effect of mixture content on the cladding performance. The microstructure of the coatings were examined using scanning electron microscope, and the wear resistance was compared using a wear tester apparatus among the different cases. The results showed that the microstructure of the coating with 30 wt.% high-carbon ferrochrome content was mainly fine solid solution phase. With the increase of high-carbon ferrochrome content to 40 wt.% and above, cracks appeared on the cladding surface due to a large amount of chromium carbides formed during the process. The microhardness was enhanced remarkably by laser cladding the composite coating on the 1045 substrate, with 2.4 times higher than the hardness of the substrate when 30 wt.% high-carbon ferrochrome content was added. The best wear performance was achieved when the high-carbon ferrochrome content was 30 wt.%, demonstrating the smallest surface roughness and depth of wear marks. With further increased high-carbon ferrochrome content, microcracking and delamination were observed on the worn surfaces.
机译：通过在ASTM 1045钢基底上激光熔覆混合的Ni45和高碳铬铁粉末，可以生产出具有较高机械性能（包括高硬度和出色的耐磨性）的复合涂层。向Ni45粉末中添加10至50 wt。％的高碳铬铁粉不同数量，以研究混合物含量对熔覆性能的影响。使用扫描电子显微镜检查涂层的微观结构，并在不同情况下使用磨损测试仪比较耐磨性。结果表明，具有30重量％高碳铬铁含量的涂层的微观结构主要是细固溶相。随着高碳铬铁含量增加到40wt。％或更高，由于在该过程中形成大量碳化铬，在包壳表面出现裂纹。通过将复合涂层激光熔覆在1045基材上，显微硬度显着提高，比添加30 wt。％高碳铬铁含量时的硬度高2.4倍。当高碳铬铁含量为30 wt。％时，磨损性能最佳，这表明最小的表面粗糙度和磨损痕迹深度最小。随着高碳铬铁含量的进一步增加，在磨损的表面上观察到微裂纹和分层。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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