The Evaluation of the Weldability of Structural Alloys with the Varestraint Test.
Final rept. 6 Jun 66-15 Oct 67,
RENSSELAER POLYTECHNIC INST TROY NY WELDING LAB
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The development of a sub-scale version of the VARESTRAINT test is described which permits the evaluation of the hot cracking sensitivity of materials with thicknesses of 18-in. and below. The hot cracking tendency of several plate and sheet materials was evaluated using the standard and sub-scale versions of the VARESTRAINT test, respectively. The heat-to-heat variation in hot cracking sensitivity was studied for 22 Heats of D6AC and significant differences were observed. Metallographic studies of the morphology of hot cracking are presented for each alloy. A mathematical analysis of the thermally induced strains around the weld puddle is presented for 2014T-6 aluminum. Author
- Metallurgy and Metallography