本文简要介绍喷丸强化工艺的机理，及在改善金属零部件疲劳断裂和应力腐蚀断裂抗力中的强化效果；
The mechanism of the shat-blast enhancing technology and its eldest on improving resisfemle to fatigue and stress corrosion fracture are describe briefly in this paper.
它是用来改善金属零构件疲劳和应力腐蚀断裂抗力的一种表面强化工艺。
It is one of surface strengthening technology which is used to improve the resistance of fatigue fracture and stress corrosion cracking of metalic parts and components.
利用SEM对实际使用时断裂的髋关节的断口和表面进行了分析，认为此关节的断裂为以弯曲应力为主的腐蚀疲劳断裂。
The fracture and the surface of a hip joint fractured invivo has been studied by SEM. It is concluded that the fracture was due to corrosion fatigue cracking by bending stress.
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