• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Engineering and Performance >Microstructure of a nitrided steel previously decarburized
【24h】

Microstructure of a nitrided steel previously decarburized

机译：预先脱碳的氮化钢的显微组织

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study the effects of a surface-controlled decarburization on the structure of a nitrided steel are analyzed. Samples of a quenched and tempered 42CrMo4 steel were decarburized by heating in air at different depths and submitted to gaseous nitriding. After decarburization and nitriding, the microstructure of surface layers was investigated by optical microscopy (OM) and scanning electron microscopy (SEM). The nitrogen and carbon profiles in the diffusion layers were determined by SEM equipped with a wavelength dispersive spectrometer (EPMA-WDS) and by glow discharge optical spectrometry (GDOS). The effect of nitriding was determined by microhardness measurements. Our results indicate that a previous decarburization only slightly affects the surface hardness, but reduces the conventional nitriding depth. The decarburization also favors the nitrogen take-up and produces increased nitrogen concentrations in the compound layer and in the narrow zone beneath it.
机译：在这项研究中，分析了表面控制脱碳对氮化钢结构的影响。通过在不同深度的空气中加热，将经过调质处理的42CrMo4钢样品脱碳，然后进行气态氮化。经过脱碳和氮化后，通过光学显微镜（OM）和扫描电子显微镜（SEM）研究了表面层的微观结构。扩散层中的氮和碳分布图通过配备有波长色散光谱仪（EPMA-WDS）的SEM和辉光放电光谱仪（GDOS）确定。氮化作用通过显微硬度测量确定。我们的结果表明，先前的脱碳处理仅会轻微影响表面硬度，但会降低常规氮化深度。脱碳也有利于氮吸收，并在化合物层及其下方的狭窄区域中产生更高的氮浓度。

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