摘要
对微波烧结Fe-2Cu-0.6C粉末冶金材料进行探索性研究,研究不同烧结温度下微波烧结样品的性能和显微组织,并与相同温度下的常规烧结样品进行对比。研究结果表明:与常规烧结相比,微波烧结可得到较高的烧结密度以及较高的抗拉强度和伸长率,两者的洛氏硬度相当;微波烧结样品在1150℃时性能最佳,密度为7.20g/cm3,抗拉强度为413.90MPa,洛氏硬度为HRB75;微波烧结样品具有良好的微观结构,即小的、近圆形且均匀分布的孔隙结构,从而也有利于获得细小的晶粒和较高的致密度;微波烧结与常规烧结相比,样品具有更多片状和粒状珠光体,能显著改善其性能。
Fe-2Cu-0.6C powder metallurgy material was researched on microwave sintering. The properties and microstructure of microwave sintered sample were studied at different sintering temperatures, and microwave sintered samples were compared with conventional sintered samples under the same conditions. The results show that compared with the conventional sintering, microwave sintering samples have higher sintering density, higher tensile strength, greater elongation and equal Rockwell hardness. The optimum performance is obtained for microwave sintered samples sintered at 1 150 ℃ for 10 min soaking, the sintered density is 7.20 g/cm^3 which is the maximum density. The tensile strength is 413.90 MPa and hardness HRB is 75. Microwave sintered sample has finer microstructures, i.e., small, rounded and uniformly distributed pores, which is advantageous to obtain the tiny crystal grain and high density. There are more flaky and granular pearlite than the conventional sintered samples, so microwave sintering can significantly improve the samples＇ performance.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第4期723-728,共6页
Journal of Central South University:Science and Technology
基金
国家科技攻关资助项目(MKPT-2004-09ZD)
