摘要
采用不同热处理工艺研究了淬火温度和介质对Fe-B-C合金组织和性能的影响。结果表明,Fe-B-C合金的凝固组织是由珠光体、铁素体、共晶硼化物组成,热处理后基体大部分转变成马氏体,共晶硼化物由连续的网状向断网状转变,并出现块状孤立组织;细长的"触角"钝化;Fe-B-C合金的硬度和冲击韧度大幅度提高。900℃水淬+250℃回火,材料的硬度最高;950℃油淬+250℃回火,冲击韧度最高;以硬度、冲击韧度和耐磨性为评价指标时,950℃水淬综合性能较好。
The microstructure and properties of Fe-B-C alloy with different quenching temperature and mediator were studied through different heat treatment. The results show that the cast structure of Fe-B-C alloy is composed of ferrite, pearlite and eutectic boride. After heat treatment, the most parts of matrix change into martensite, the eutectic boride transforms from network into less interconnection, and isolated particles appear, long and thin ＂feeler＂ is inactive. The results also show that the hardness and impact toughness of Fe-B-C alloy increase rapidly after heat treatment. The peak of hardness appeares at 900 ℃ water quenching ＋ 250 ℃ tempering; the best impact toughness occurres in 950℃ oil quenching ＋ 250 ℃ tempering; considering hardness, impact toughness and wear resistance, the combination property of Fe-B-C alloy is best at 950 ℃ water quenching.
出处
《热加工工艺》
CSCD
北大核心
2008年第2期31-33,37,共4页
Hot Working Technology
基金
河南省杰出人才创新基金资助项目(074200510004)
