A new methodology for assessing weld solidification cracking using the Varestraint test was utilized to evaluate the susceptibility of Al-Cu-Li alloys 2090, 2094, and 2195. These alloys were found to be more susceptible to cracking than Li-free alloys 2014 and 2219. A new index, the solidification cracking temperature range, is used to quantify this susceptibility. The effect of solidification behavior and eutectic liquid film formation on crack behavior is described. (orig.)
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Lippold et al. (1996) studied this question.