摘要
研究了中频感应炉熔炼、水玻璃砂型冷却制备的Fe3A1金属间化合物合金铸态及热处理后的组织、力学性能和冲击断裂行为。结果表明:热处理后合金的抗拉强度σb提高了49MPa,硬度由铸态时的21.6HRC提高到了25HRC,但合金的冲击韧度出现了较明显的下降;铸态时合金的断裂主要呈沿晶断裂特征,热处理后合金断口呈沿晶+穿晶的混合型断裂特征。
The Fe3Al alloy were melted in intermediate frequency induction furnace and solidified in water glass sand. The microstructure, mechanical properties and impact fracture characteristic of Fe3Al alloy were studied. The results show that after heat treatment, the tensile strength of the alloy increases by 49 MPa, the hardness increases from 21.6 HRC to 25 HRC, and the impact fracture toughness decreases; fracture characteristic is intercrystalline fracture in as-cast, it is intercrystalline and transcrystalline mixed fracture after heat treatment.
出处
《热加工工艺》
CSCD
北大核心
2010年第1期1-3,共3页
Hot Working Technology
基金
甘肃省自然科学基金项目(3ZS042-B25-028)
兰州理工大学有色金属合金及加工教育部重点实验室开放基金(EKL07009)
关键词
FE3AL
组织
力学性能
冲击断口
Fe3Al
microstructure
mechanical properties
impact fracture
