百度文库 - 让每个人平等地提升自我 0 目 录 摘 要 .............................................................................................................................................. 0 Abstract........................................................................................................................................... 0 1.绪论 .............................................................................................................................................. 2 1.1 贝氏体相变与贝氏体钢 ................................................................................................... 2 1.2 贝氏体耐磨钢的应用 ....................................................................................................... 2 1.3贝氏体钢的发展与前景 .................................................................................................... 3 1.4主要研究内容及意义 ........................................................................................................ 4 1.4.1主要研究内容 ........................................................................................................ 4 1.4.2实验意义 ................................................................................................................ 4 2.实验方法及过程 ........................................................................................................................... 5 2.1 技术路线 ............................................................................................................................ 5 2.2 实验材料及设备 ............................................................................................................... 5 2.4 自制焊条的配方 ............................................................................................................... 8 2.5 焊接过程 ........................................................................................................................... 8 2.5.1焊前准备 ................................................................................................................ 8 2.5.2 实验参数 ............................................................................................................... 9 2.5.3 施焊 ....................................................................................................................... 9 2.6 金相组织检测 ................................................................................................................... 9 2.7 显微硬度测试 ................................................................................................................. 10 3.实验结果与分析 ......................................................................................................................... 11 3.1焊条焊接工艺性能 .......................................................................................................... 11 焊接工艺性能如图表3.1所示 ............................................................................................. 11 表3.1两种焊条的焊接工艺性能 ......................................................................................... 11 3.2金相组织分析 .................................................................................................................. 12 3.2.1母材 ...................................................................................................................... 12 3.2.3 熔合区 ................................................................................................................. 14 3.2.4 热影响区 ............................................................................................................. 15 3.3显微硬度分析 .................................................................................................................. 16 3.3.1 JD-960焊条的焊接接头显微硬度 .................................................................... 16 3.3.2自制焊条的焊接接头显微硬度 .......................................................................... 18 3.3.3两种焊条焊接接头显微硬度的对比 .................................................................. 19 两种焊条焊接接头显微硬度的对比如图3.7所示： ................................................. 19 4.结 论........................................................................................................................................... 20 致 谢 .............................................................................................................................................. 20 参考文献：..................................................................................................................................... 20