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烧结-硬化材料的特点是淬透性高,这使着在加速冷却时可形成的马氏体的量(体积分数)>80%。但是,这些中等合金化的材料往往压缩性较低,从而导致密度较低,限制了其在高强度零件中的应用。为了使这些材料用于新的高强度零件用途,需要用何种方法来增高当今烧结-硬化材料的生坯与烧结件的密度呢?本文阐述了如何用新合金化系统和先进的粘结剂技术相结合,来增高标准的烧结-硬化合金的生坯与烧结件密度。将说明导致的力学性能改进,以及高密度烧结-硬化材料可能在像高强度齿轮之类用途中找到应用。
Sinter-hardened materials are characterized by a high hardenability, which allows> 80% martensite formation (volume fraction) to form upon accelerated cooling. However, these medium alloying materials tend to be less compressible, resulting in lower density, limiting their use in high-strength parts. In order to make these materials useful for new high-strength parts, what are some ways to increase the density of today’s green-sintered and hardened materials? This article explains how to use new alloying systems and advanced binders Technology to increase the density of green and sintered parts of standard sintered-hardened alloys. The resulting improvement in mechanical properties, as well as high density sintered-hardened materials, may find applications in applications such as high-strength gears.