李洲,魏世忠,徐流杰,赵云超,王长记

• 1:河南科技大学
• 2:金属材料磨损控制与成型技术国家地方联合工程研究中心
• 3:河南省耐磨材料工程技术研究中心

摘要(Abstract)：

钨及其合金凭借高熔点、高热导率、低膨胀系数等特性被广泛应用于航空、军工、核工业等领域。但是钨又存在低温脆性、再结晶脆性等问题，在一定程度上限制了其应用。弥散强化和细晶强化是改善钨合金综合性能的有效途径，在钨基体中加入碳化物或氧化物等均匀分散的纳米第二相来强化晶粒和晶界可以提高合金综合性能。目前常用的弥散强化相为碳化钛（TiC）、碳化铌（NbC）、碳化锆（ZrC）等碳化物和氧化镧（La_2O_3）、氧化铝（Al_2O_3）、氧化钇（Y_2O_3）、氧化锆（ZrO_2）等氧化物。本文综述了国内外关于第二相强化钨合金的研究概况和最新进展，从材料制备、微观结构、力学性能等方面进行了对比和分析，并对未来高性能钨合金的发展趋势进行了展望。

关键词(KeyWords)： 钨合金;第二相;制备方法;弥散强化;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（U2004180）;; 河南省自然科学青年基金（222300420155）

作者(Author): 李洲,魏世忠,徐流杰,赵云超,王长记

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