| 牙轮钻头牙掌焊接和热处理产生的裂纹分析 |
| |
| 引用本文： | 周细应,柯黎明,王伟兰,华小珍,刘汉鼎.牙轮钻头牙掌焊接和热处理产生的裂纹分析[J].金属热处理,2002,27(1):50-53. |
| |
| 作者姓名： | 周细应 柯黎明 王伟兰 华小珍 刘汉鼎 |
| |
| 作者单位： | 1. 南昌航空工业学院,材料科学与工程系,江西,南昌,330034
2. 宜春第一机械厂,江西,宜春,336000 |
| |
| 摘 要： | 运用扫描电子探针对三牙轮钻头牙掌堆焊和热处理后产生的裂纹特征进行了分析，并采用X－射线衍射仪测定了牙试件的残余应力。结果表明，堆焊层与基体的界面缺陷是裂纹形成的主要原因。裂纹扩展方式为穿晶断裂。而堆焊层面拉应力导致裂纹的进一步产生与扩展。建议在堆焊工艺和热处理工艺中采取措施可能减少应力。
|
| 关 键 词： | 裂纹 堆焊 热处理 牙轮钻头 牙掌 |
| 文章编号： | 0254-6051(2002)01-0050-04 |
Crack Analysis in Palm of Roller Bit by Overlaying Welding and Heat Treatment |
| |
| ZHOU Xi ying ,KE Li ming ,WANG Wei lan ,HUA Xiao zhen ,LIU Han ding.Crack Analysis in Palm of Roller Bit by Overlaying Welding and Heat Treatment[J].Heat Treatment of Metals,2002,27(1):50-53. |
| |
| Authors: | ZHOU Xi ying KE Li ming WANG Wei lan HUA Xiao zhen LIU Han ding |
| |
| Affiliation: | ZHOU Xi ying 1,KE Li ming 1,WANG Wei lan 1,HUA Xiao zhen 1,LIU Han ding 2 |
| |
| Abstract: | The characterization of the crack in palm of the roller bit produced by overlaying welding and heat treatment was studied with the scanning electron microscope(SEM) and its residual stress was tested with X ray diffraction(XRD).The results showed that the forming of crack was mostly made by the interface defect between overlaying welding layer and matrix.The propagation of crack causes transgranular fracture.The tensile stress in the layer of overlaying welding resulted in the initiation and propagation of the crack.It was suggested that the stress produced by overlaying welding and heat treating would be reduced as possible. |
| |
| Keywords: | crack analysis overlaying welding heat treatment roller bit |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
