摘要
采用金相显微镜、扫描电镜和热力学计算,研究了Ca-Si变质处理对30MnVS钢(%:0.30~0.33C、1.40~1.60Mn、0.08~0.14V、0.065~0.090S)硫化物形貌和组成的影响。结果表明,随着Ca含量(0.001 2%、0.002 1%、0.003 5%、0.004 6%)的增加,团簇的杆状硫化物逐渐转变为均匀分散的球状硫化物,并且大多数球形硫化物中含有复合氧化物核心。其成分变化规律为CaO·3(Al_2O_3)·SiO_2-3(CaO)·6(Al_2O_3)·2(SiO_2)-6(CaO)·9(Al_2O_3)·4(SiO_2)-4(CaO)·3(Al_2O_3)·2(SiO_2),计算结果与实验分析结果基本吻合。
Effect of Ca-Si modified treatment on morphology and ingredient of sulfide in steel 30MnVS ( % : 0. 30 -0. 33C, 1.40 - 1.60Mn, 0. 08 -0. 14V, 0. 065 -0. 090S) has been studied by optical microscope, scanning electron microscope and thermodynamic calculation. Results show that with increasing Ca content (0.001 2%, 0.002 1%, 0.003 5% and 0.004 6% ) in steel, cluster rod-like sulfides gradually modify to dispersing globular sulfides, and most of sulfides have compound oxide core, the change sequence of its ingredient is CaO-3 (Al2O3 ) · SiO2-3 (CaO) ·6( Al2O3 )·2 (SiO2 )- 6(CaO) ·9( Al2O3 ) -4( SiO2 ) - 4( CaO)·3 ( Al2O3 )·2 ( SiO2 ), and the results of calculation coincide with that of experiment analysis.
出处
《特殊钢》
北大核心
2009年第5期39-41,共3页
Special Steel
基金
国家科技支撑计划(2007BAE15B05)
新世纪优秀人才支持计划(SCET-04-11471)
关键词
易切削
非调质钢
Ca—Si处理
复合硫化物
热力学分析
Free Cutting, Non-Quenched-Tempered Steel, Ca-Si Treatment, Compound Sulfide, Thermodynamic Analysis