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China/Asia On Demand
Journal Articles
gun ya yu ying bian dui han jie jie tou zu zhi xing neng de ying xiang
Pages: 75-79
Year: Issue:  1
Journal: Materials Science and Technology

Keyword:  rollingfatigue propertywelded joint;
Abstract: After rolling deformation,the fatigue and mechanical properties of the welded joints were studied(neglecting surface effect).The fractograph and dislocation were observed with SEM and TEM.The experimental result ind- icated that the fatigue limits of the matetial rolled is significantly decrea- sed althrough its strength and hardness are apparently,increased.A brittle fractograph is fond on the fatigue sample.It is considered that special disl- ocation structure and inner damage formed in the welded joint by rolling is the main reason for the decrease of fatigue strength.
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