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| 砷对45钢组织及力学性能的影响 | |
| 引用本文： | 程慧静,王福明,李长荣,谭燕萍,王建军.砷对45钢组织及力学性能的影响[J].金属热处理,2010,35(2). |
| 作者姓名： | 程慧静 王福明 李长荣 谭燕萍 王建军 |
| 作者单位： | 1. 北京科技大学,冶金与生态工程学院,北京,100083 2. 北京科技大学,材料科学与工程学院,北京,100083 3. 江阴兴澄特钢有限公司,江苏,江阴,214429 |
| 基金项目： | 国家自然科学基金项目(50574010);;教育部博士点基金项目(20060008015) |
| 摘 要： | 采用膨胀法、金相法研究了不同As含量45钢的过冷奥氏体连续冷却转变过程,分析了45钢在不同冷速下过冷奥氏体的组织转变,测定了试验钢的室温抗拉强度与冲击功,并利用扫描电镜(SEM)观察了断口形貌。研究结果表明,随砷含量的增加,45钢组织中的铁素体含量增加,且较易形成晶内铁素体;砷的加入缩短了贝氏体转变的孕育期,使45钢的过冷奥氏体连续冷却转变曲线明显左移,其M s点温度随砷含量的增加依次下降;砷含量0.25%时,对45钢强度与韧性的影响并不明显。 |
| 关 键 词： | 45钢 砷 CCT曲线 力学性能 |
Effect of arsenic on microstructure and mechanical properties of 45 steel |
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| CHENG Hui-jing,WANG Fu-ming,LI Chang-rong,TAN Yan-ping,WANG Jian-jun.Effect of arsenic on microstructure and mechanical properties of 45 steel[J].Heat Treatment of Metals,2010,35(2). | |
| Authors: | CHENG Hui-jing WANG Fu-ming LI Chang-rong TAN Yan-ping WANG Jian-jun |
| Affiliation: | 1.School of Metallurgical and Ecological Engineering;University of Science and Technology Beijing;Beijing 100083;China;2.School of Materials Science and Engineering;3.Jiangyin Xingcheng Special Steel Co.;Ltd;Jiangyin Jiangsu 214429;China |
| Abstract: | The continuous cooling transformation curves for 45 steels with varied contents of arsenic were examined by use of thermal dilatometer and metallography.And the microstructure obtained at different cooling rates was analyzed.The room temperature tensile strength and the impact energy of the tested steels were measured and the fractography was observed using SEM.The results show that the ferrite contents increase and the intragranular ferrite phase is easily formed with the increase of amount of As in 45 ste... |
| Keywords: | 45 steel arsenic(As) CCT curve mechanical properties |
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