Q-T和Q-P工艺对Fe-C-B合金组织与性能的影响

Effects of Q-T and Q-P Processes on Microstructure and Properties of Fe-C-B Alloy

摘要: 为了获得综合性能好、成本低的耐磨钢，分别采用淬火-回火（Q-T）和淬火-分配（Q-P）工艺对Fe-C-B合金进行热处理。结果表明，相较于Q-T工艺，Q-P工艺处理后的试样综合性能更加优异。采用Q-T工艺处理后合金的冲击韧性提升了18.9%，而采用Q-P工艺处理后的合金，获得了板条马氏体和薄片状残余奥氏体组成的基体，薄片状的残余奥氏体对于提升Fe-C-B合金的冲击性能产生了重要效果，使该合金的冲击性能提升了50.9%。

Abstract: In order to obtain the wear-resistant steel with good comprehensive properties and low cost, Fe-C-B alloy was heat treated by quenching-tempering(Q-T)and quenching-distribution(Q-P)processes, respectively.The results show that the comprehensive properties of the samples treated by Q-P process are better than those by Q-T process.The impact toughness of the alloy is increased by 18.9%with the Q-T process. The matrix composed of lath martensite and sheet retained austenite is obtained by using the alloy treated by Q-P process. The sheet retained austenite has an important effect on improving the impact properties of Fe-C-B alloy, and the impact properties of the alloy have been increased by 50.9%