A New Test Specimen for Self-Restraint Solidification Crack Susceptibility Test of Electron-Beam Welding Bead : Fan-Shaped Cracking Test(Materials, Metallurgy & Weldability)
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A new self-restrained hot cracking test specimen used for the evaluation of the solidification crack susceptibility of electron-beam weld bead was proposed in this report, as a result of the investigation for cracking mechanism of weld bead with higher welding speed in Houldcroft-type test. The shape of the new test specimen was spreaded out like an unfolded fan, named as "Fan-shaped test", as welding proceeded. The dimensions of the test specimen were determined for aluminum alloys and stainless steels. Then the solidification crack susceptibilities for twelve different aluminum alloys and four stainless steels were compared and investigated.
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