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Recent content by HY Tan

  1. HY Tan

    Blistering during Heat Treatment of AA 6061

    Hi WKTaylor, The reason we require 500C (~932F) is due to tonnage being too high if I drop the temperature. 500C is the oven setting temperature. I believe the part cools off by about 20-40C right before forging. Do you believe the high temperature of forging to be a cause of these blisters...
  2. HY Tan

    Blistering during Heat Treatment of AA 6061

    Hi Metengr, Could these internal fissures rupture during solutionizing since I am heating up to 560C?
  3. HY Tan

    Blistering during Heat Treatment of AA 6061

    Hi Ed, I've compiled some pictures. Here you go! Just to clarify, the SEM picture on the top right corner shows a cavity rather than blister. It is in fact a protruded blister. It shows a cavity because I have sanded off the blister, exposing the underlying cavity. Thank...
  4. HY Tan

    Blistering during Heat Treatment of AA 6061

    Hi, My company is manufacturing aluminum 6061 forgings (forging temp ~500C). After forging, we are required to heat treat the part to T6 via solutionizing, quench and artificial aging. One problem we are encountering is blistering at certain locations, blister size approx. 1-2mm diameter. The...
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