C、B、Hf在镍基高温合金中作用的研究进展  

The Research Progress of the Role of C, B and Hf in Nickel-Based Superalloy

作　　者：余竹焕[1] 张洋[1] 翟娅楠 王盼航 

机构地区：[1]西安科技大学材料科学与工程学院,陕西西安710054

出　　处：《铸造》2017年第10期1076-1081,共6页Foundry

基　　金：国家重点基础研究发展计划项目(2010CB610406);陕西省教育厅专项科研计划项目(15JK1487);国家自然科学基金项目(项目号51201130;51331005);国家高技术研究发展计划项目(2012 AA03A511)

摘　　要：高温合金由于较高的高温强度以及良好的组织稳定性等特征,被广泛地应用于航空航天领域。随着高温合金的发展,难熔元素以及贵金属元素的添加使得其成本大幅度提高,同时也使铸造缺陷显著增加。近年来的研究发现:C、B、Hf的添加可以强化晶界,提高铸造产品的成品率、力学性能和组织稳定性并降低生产成本。本文总结了近年来微量元素C、B、Hf在高温合金中的作用,主要论述了C、B、Hf的添加对高温合金凝固特性、凝固组织和力学性能的影响。Superalloys have been widely used to aerospace area because of improved strength and stable microstructure. Additions of refractory elements and precious metal elements make the cost increase significantly, and the casting defects increased significantly with the development of superalloy. In recent years, the research show that addition of C, B and Hf can strengthen the grain boundary, improve the yield of casting products and stability, reduce the production cost. The effects orB, C and Hfon the superalloy were summarized. The influence of C, B and Hf on solidification characteristics, solidifying structure and mechanical properties were reviewed.

关 键 词：镍基高温合金 碳 硼 铪 

分 类 号：TG132.3[一般工业技术—材料科学与工程]