喷丸条件对残余应力场的影响规律  

Influence of Shot Peening Parameters on the Residual Stress Field

作　　者：杨永红[1] 乔明杰[2] 张卫红[1] 

机构地区：[1]西北工业大学机电学院,西安710072 [2]西安飞机工业集团有限责任公司,西安710089

出　　处：《中国表面工程》2009年第2期45-48,共4页China Surface Engineering

基　　金：“十一五”国家科技支撑计划项目(2007BAF27B02)

摘　　要：采用试验方法研究了喷丸条件对残余挤压应力场的影响规律。试验对不同弹丸尺寸、不同覆盖率所形成的残余应力场采用X射线方法进行测量,结果表明,喷丸条件对残余应力场的深度和水平的影响存在如下规律:弹丸尺寸对残余应力场的深度影响明显,在相同的喷丸气压和喷丸强度下,大弹丸形成的残余应力场较深;弹丸覆盖率对残余应力水平影响明显,相同喷丸气压下,增加喷丸覆盖率则能提高残余应力水平;试件厚度对应力分布无明显影响。The laws that shot peening parameters affecting CRSF （compressive residual stress field） are investigated with experimental methods. The CRSF produced by different size shots and different coverage are measured with X-ray method. The experiment results show that shot peening conditions affect the CRSF in the laws as the following： （1） Shot size has a distinct effect on the depth of CRSF, i.e., the depth of the CRSF increases with the growth of shot size when the air-pressure and peening intensity keep unchanged. （2） Peening coverage has a distinct effect on the level of CRSF, i.e., the level of CRSF increases with the increase of coverage. （3） The thickness of component has no effect on CRSE Based on the experiment results, and advices are proposed for shot peen strengthening and shot peen forming.

关 键 词：喷丸 残余应力 喷丸强度 

分 类 号：V250.2[一般工业技术—材料科学与工程]