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高硬度不锈钢的使用需求在快速增长。尽管析出硬化不锈钢具有高强度,但在粉末冶金(P M)中使用的并不多。可通过加入在时效过程形成金属间沉淀的成份如铜、铌对这些合金进行强化。析出硬化级不锈钢的耐腐蚀性能可与铬镍级(300系列)相媲美。本文提出了两种析出硬化不锈钢粉末的物理性质和微观结构:17-4PH,一种高铬马氏体析出硬化不锈钢,优化条件后应用于粉末冶金中;另一种是在析出反应中使用铜的新型低铬(12w/o)合金。这种新型合金(410LCu)被视为满足高强度和中等耐腐蚀性的要求的低成本选择。本文在PowerMet2006中提出,并发表在2006年Advances in Power Metallurgy & Particulate Material杂志的粉末冶金和颗粒材料国际会议专辑上。可以从MPIF的出版部门(www.mpif.org)获取本文。
The demand for high hardness stainless steel is growing rapidly. Although precipitation hardened stainless steels have high strength, they are not used in powder metallurgy (P M). These alloys can be strengthened by the addition of ingredients that form intermetallic precipitates during aging, such as copper and niobium. Precipitation hardening grade stainless steel corrosion resistance with chrome-nickel grade (300 series) comparable. This paper presents the physical properties and microstructures of two precipitation-hardened stainless steel powders: 17-4PH, a high-chromium martensitic precipitation-hardened stainless steel, which is used in powder metallurgy after optimization; the other is the use of copper Of the new low chromium (12w / o) alloy. This new alloy (410LCu) is seen as a low-cost alternative to meet the demands of high strength and medium corrosion resistance. This article was presented in PowerMet 2006 and presented at the 2006 International Conference on Powder Metallurgy and Particulate Materials, Advances in Power Metallurgy & Particulate Materials. This article is available from the MPIF Publishing Department (www.mpif.org).