摘要
为满足对高力学性能钨合金的需求,抑制钨晶粒的生长,制备细晶钨合金是发展趋势。向钨合金复合粉末中添加合金元素或氧化物,将引起细晶强化、固溶强化或弥散强化,有利于改善钨合金的强度和硬度。从添加难熔金属元素、稀土元素及其氧化物等方面入手,并结合本文作者对放电等离子烧结含Mo细晶钨合金的研究,介绍细晶高密度W-Ni-Fe合金的合金元素强化技术。最后,基于目前该领域存在的一些主要问题,对未来研究方向提出了若干建议。
In order to meet the demand for W-Ni-Fe heavy alloys(WHAs) with high mechanical properties,fabricating fine-grained WHAs by restraining the growth of W grains is the main development trend.Adding alloying elements or oxides in W-Ni-Fe composite powders can cause fine-grained strengthening,solution strengthening or dispersion strengthening.These strengthening techniques are benefit to the significant improvement of WHAs strength and hardness.From adding refractory metal elements,rare earth elements and oxides in the WHAs,and combining with the studies of the authors on the fine-grained WHAs containing Mo fabricated by spark plasma sintering(SPS),different strengthening techniques were introduced.Based on the existing main problems in the realm of WHAs,some suggestions of future research directions were presented.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2013年第6期1549-1559,共11页
The Chinese Journal of Nonferrous Metals
基金
国家高技术研究发展计划资助项目(2007AA032112)
中国博士后基金特别资助项目(200801254)
海南省自然科学基金资助项目(513138)
国家金属材料近净成形工程技术研究中心开放基金资助项目(2011007)
海南大学科研启动基金资助项目(kyqd1114)
海南大学青年基金资助项目(qnjj1231)
关键词
W-NI-FE合金
合金元素
细晶强化
固溶强化
力学性能
W-Ni-Fe alloys(WHAs)
alloying elements
fine-grained strengthening
solution strengthening
mechanical property