ELECTRON BEAM MELTING TOWARD DEFECTS-FREE TITANIUM ALLOYS

Electron beam melting toward defects-free titanium alloys

Titanium alloys used for rotating parts of aeroplanes must meet the strict standards of quality, so that it is required to ROCK ROSE demonstrate that electron beam melting is capable of producing defects-free ingots.However, complete elimination by dissolution of low density inclusions (LDI) having high nitrogen content would be difficult, so that

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The Growing Pains of Community Radio in Africa

Community radio is considered as an intervention strategy of choice for deepening participation and community ownership.Donors have funded a proliferation of community Alarm Clock radio projects in the Global South, prompted by stories attesting to the power of radio as a tool for social change.The evidence suggests that beyond empowering communiti

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