| 弹簧钢60Si2Mn疲劳试验断裂分析 |
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| 引用本文： | 袁观明,李平和,李轩科,张铭金,吕早生,张光德,雷中兴.弹簧钢60Si2Mn疲劳试验断裂分析[J].物理测试,2006,24(1):35-38,42. |
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| 作者姓名： | 袁观明 李平和 李轩科 张铭金 吕早生 张光德 雷中兴 |
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| 作者单位： | 河钢集团邯郸分公司技术中心，河北 邯郸 056015 |
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| 基金项目： | 湖北省教育厅中青年人才基金 |
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| 摘 要： | 对60Si2Mn弹簧钢进行了疲劳寿命试验。试验结果表明，疲劳寿命较低，未达到标准要求(不低于20万次)。采用化学成分检测、断口扫描观察、能谱分析和金相检验等方法，对疲劳试验中断裂弹簧进行了分析、检测。分析结果表明，钢丝表面微裂纹是导致弹簧疲劳断裂的直接原因，该裂纹是由于母材表面存在轧制缺陷，经过拉拔表面产生硬化组织，由于塑性不足，产生微裂纹；钢丝近表面存在超尺寸夹杂物，该夹杂物属于连铸过程中典型的外来宏观夹杂物，间接加速了弹簧疲劳断裂。
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| 关 键 词： | 60Si2Mn弹簧钢 疲劳寿命试验 疲劳断裂分析 |
| 文章编号： | 1001-0777（2006）01-0035-04 |
| 修稿时间： | 2005-08-10 |
Dispersion of Carbon Nanotubes Encapsulated by Nickel Particles in Epoxy Resin by SEM-EDS |
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| YUAN Guan-ming,LI Ping-he,LI Xuan-ke,ZHANG Ming-jin,L Zao-sheng,ZHNAG Guang-de,LEI Zhong-xing.Dispersion of Carbon Nanotubes Encapsulated by Nickel Particles in Epoxy Resin by SEM-EDS[J].Physics Examination and Testing,2006,24(1):35-38,42. |
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| Authors: | YUAN Guan-ming LI Ping-he LI Xuan-ke ZHANG Ming-jin L Zao-sheng ZHNAG Guang-de LEI Zhong-xing |
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| Affiliation: | Technical Center, Handan branch, Hegang Group, Handan 056015, China |
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| Abstract: | Using the carbon nanotube-encapsulated by nickel particles synthesized by catalytic vapor decomposition method as fillers, carbon nanotube/epoxy composites were prepared by an ultrasonic assisted by solution-evaporation method. The microstructure of tensile-fracture section of the carbon nanotube/epoxy composites was observed by scanning electron microscope, the dispersion status of carbon nanotube in epoxy resin was investigated by X-ray spectrometer,and the reinforcing mechanism of carbon nanotubes on epoxy resin was discussed as well. |
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| Keywords: | SEM EDS carbon nanotubes epoxy resin composites |
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