FORMING CONTROL AND THE RELATIONSHIP BETWEEN MICROSTRUCTURE AND MECHANICAL PROPERTY IN TIG-ASSISTED FRICTION STIR WELDED JOINT OF TI-6AL-3NB-2ZR-1MO TITANIUM ALLOY

Forming control and the relationship between microstructure and mechanical property in TIG-assisted friction stir welded joint of Ti-6Al-3Nb-2Zr-1Mo titanium alloy

In this paper, T-joints of Ti-6Al-3Nb-2Zr-1Mo titanium alloy were joined with friction stir welding, and microstructure evolution and forming mechanism were studied.The effect of using tungsten inert gas welding to heat additionally the FSW was investigated.Results show a strong effection microstructure of stir zone (SZ) due to the temperature grad

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Challenges and perspectives of child labor

Child labor is one of the oldest problems in our society and still an ongoing issue.During the time, child labor evolved from working in agriculture or small handicraft workshops to being forced into work in factories in the urban setting as a result of the industrial revolution.Children were very profitable assets since their pay was very low, wer

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