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  1. seep555

    No REX in HEA at high temperature?

    I am working now on a high-entropy alloy which seems not to recrystallize at high temperature annealing (>0.5Tm). It is hot forged and has grains of few tens of um with many nanocells inside them. At high T it seems that grains are growing but not recrystallizing and dislocations remain stable...
  2. seep555

    Ultra-fined/nano structure after HOT FORGING

    Hello everyone! Is it possible to obtain an ultra-fined/nano structure (single grains of 200nm in the structure) just after hot forging? I have to steels with slightly different compositions. Both of them are rich in Ni and Co, there is also a big amount of Cr and Mn. In one (after the same...
  3. seep555

    Nanostructured HEA without strong deformation

    Hello everyone, I obtained a nanostructured (or maybe rather ultra-fine grained) material (grains of about 200nm) just by hot forging as-cast alloy. This material is based on high entropy alloy (Fe, Cr, Ni, Mn, Co) and it possess FCC structure. Is it possible that some kind of transformation...
  4. seep555

    Rolled samples treating for microtensile test

    Hello everyone, I have to do a heat treatment (600C and 1000C for 24 hours) of rolled samples (1mm thickness, 40mm length) of austenitic stainless steel and I am not sure if it's ok if I just use argon atmosphere (24h is not very long in my opinion) or it's better if use a glass protection...

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