论文部分内容阅读
粉末冶金产业市场力量正在挑战粉末冶金合金中通常使用的传统组成。Mo、Ni及Cu因和氧亲和力低,是铁基粉末冶金使用的主要合金化元素。另外,Mo对压缩性的影响很小,和Cu在烧结温度下通过液相可快速熔成合金。这三种元素也都增高钢的淬透性,用这些元素的混合物生产的零件可进行烧结硬化。价格压力迫使对采用这些元素的粉末组成重新进行了评估,合金开发的任务在于提出使力学性能与生产总成本间达到最佳平衡的合金系。烧结硬化合金组成在这一点上起重要作用。将评估与讨论可替代在欧洲市场上主要使用的合金的合金。
Market forces in the powder metallurgy industry are challenging the traditional composition commonly used in powder metallurgy alloys. Mo, Ni and Cu have low affinity with oxygen and are the main alloying elements used in iron-based powder metallurgy. In addition, Mo has little effect on compressibility, and Cu rapidly melts into the alloy through the liquid phase at the sintering temperature. All three of these elements also increase the hardenability of the steel, and parts produced from mixtures of these elements can be hardened. Price pressure has forced a re-evaluation of the powder composition using these elements, and the task of alloy development has been to propose alloy systems that strike the best balance between mechanical properties and overall production costs. Sinter hardening alloy composition plays an important role at this point. The alloy that will replace the main alloys used in the European market will be evaluated and discussed.