摘要
通过不同的热处理淬火温度改变铸造Fe-B-Ti合金的组织,探讨了铸造Fe-B-Ti合金不同组织与性能的关系。试验结果表明:淬火温度较低时,硼化物变化较小,网状分布趋势明显;淬火温度较高时,硼化物断网和团聚化趋势明显加快。淬火温度1 050℃时,硼化物网状特征消失,基本上都变成了团块状、颗粒状和杆棒状分布。随着淬火温度升高,硬度和韧性增加,超过1 000℃,硬度和韧性变化不明显。淬火温度1 050℃时,综合性能良好。
The microstructure of cast Fe-B-Ti alloy was changed under different hardening heat. The relations between different microstructures and properties were discussed. The results show that the transformation of boride is small and the network distribution of boride is very obvious while the quenching temperature is slow. When the quenching temperature is higher, the breaking network and aggregating tendency of boride quicken obviously. When the quenching temperature reaches 1 050 ℃, the network boride disappears, which transforms into block, grain and rod boride. The hardness and impact toughness of cast Fe-B-Ti alloy increase while increasing the quenching temperature. The hardness and impact toughness have no obvious change while excelling 1 000 ℃. The quenching temperature is 1 050 ℃, cast Fe-B-Ti alloy has excellent comprehensive properties.
出处
《铸造》
EI
CAS
CSCD
北大核心
2007年第9期995-998,共4页
Foundry
基金
国家"863"项目资助(863-715-009-0110)。
