Boriding of the heat treated Inconel 718 alloy

硼化是在镍合金（例如Inconel 718）上产生硬耐磨硼化镍表面层的有效方法。这些层具有相当深并且在刮擦和重复加载期间非常耐失效的优点。渗硼是一种基于扩散的工艺，涉及相当复杂的化学反应，其有效应用于热处理镍合金的主要挑战是最大限度地减少镍硅化物的沉淀，并选择不会消除先前热处理的渗硼热循环。该拟议项目涉及汉密尔顿的表面硬化热处理公司Surface Heat Treat and Coating与西安大略大学的R.J. Klassen教授之间的合作，以评估各种渗硼工艺对热处理Inconel 718合金上所得硼化镍层的微观结构、局部硬度和耐磨性的影响。目的是了解在该渗硼过程中发生的微观结构演变，以便该过程可以优化并作为商业服务提供给Inconel 718合金的用户。

Boriding is an effective method to create hard wear resistant nickel boride surface layers on nickel alloys, such as Inconel 718. These layers have the advantage of being quite deep and very resistant to failure during scratching and repeated loading. Boriding is a diffusion based process that involves rather complex chemical reactions and the primary challenges in its effective application to heat treated nickel alloys is to minimize the precipitation of nickel silicides and to choose a boriding thermal cycle that will not remove the prior heat treatment. This proposed project involves a collaboration between Surface Heat Treat and Coating, a Hamilton-based surface hardening heat treatment company, and Prof. R.J. Klassen of the University of Western Ontario to assess the effect of various boronizing processes on the microstructure, local hardness, and wear resistance of the resulting nickel boride layers on the heat treated Inconel 718 alloy. The objective is to understand, the microstructural evolution that occurs during this boriding process such that the process can be optimized and offered as a commercial service to users of the Inconel 718 alloy.