注射成形高比重合金的性能与显微组织
来源期刊：中国有色金属学报1998年第4期
论文作者：范景莲 黄伯云 曲选辉 邱光汉 李益民
文章页码：590 - 594
关键词：注射成形；高比重合金；性能；显微组织
Key words：tungsten heavy alloy; powder injection molding; property; microstucture
摘 要：含钨量较高的W-Ni-Fe高比重合金具有高的密度、强度等优异性能，适合用作动能穿甲弹以及防辐射屏蔽材料； 而粉末注射成形技术(PIM)在生产小而形状复杂与性能良好的零件方面具有很大的潜在优势。研究了95W-3.5Ni-1.5Fe高比重合金的注射成形工艺，讨论了其烧结工艺与性能的关系，并与采用传统粉末冶金(PIM)法制造的合金性能与显微组织进行了比较。结果表明，采用注射成形所生产的合金，性能更高，硬度分布和显微组织结构更均匀。
Abstract: W-Ni-Fe heavy alloy with higher content of tungsten has a series of good properties, such as high density, high strength and so on. It is applicable to be used as penetrors, armor-piercing bullets, and radiation shielders. Powder injection molding (PIM) has a potential advantage in manufacturing small parts with complex shape. The injection process of 95W-3.5Ni-1.5Fe samples molding was investigated, and the sintering process and the dependence of properties on microstructures were discussed. Compared with traditional powder metallurgy (PM), the properies of this kind of alloy made by PIM is higher, the distribution of hardness and microstructure are uniform.
