激光处理对切口棒料疲劳性能的影响

来源 :东南大学学报 | 被引量 : 0次 | 上传用户：bisha1007

【摘要】

：

疲劳断料是一种新的分离材料方法.通过对棒料进行切口并施加旋弯载荷,可人为制造疲劳.为了进一步提高断裂的效率,采用激光对棒料切口的根部进行了处理,处理后的棒料疲劳周次

【作者】

：

张辉凌维业蒋寿伟

【机构】

：

上海交通大学机械工程学院,上海,200030东南大学机械工程系,南京,210096;

【出处】

：

东南大学学报

【发表日期】

：

2003年2期

【关键词】

：

激光处理切口超低周疲劳硬化区 laser treatment notch extremely low cycle fatigue hardened are

【基金项目】

：

Shanghai Science and Technology Development Foundation;

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论文部分内容阅读

疲劳断料是一种新的分离材料方法.通过对棒料进行切口并施加旋弯载荷,可人为制造疲劳.为了进一步提高断裂的效率,采用激光对棒料切口的根部进行了处理,处理后的棒料疲劳周次大大降低.通过分析实验结果得到:棒料的疲劳受硬化区形状影响,具有较小轴向尺寸和较大径向尺寸的硬化区会促进疲劳.硬化区的形状可以通过调整激光处理参数来控制.

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激光处理对切口棒料疲劳性能的影响

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