Second slide

High-frequency quenching/high-frequency annealing

45#- Before high-frequency quenching

45#- Before high-frequen…
45#- After high-frequency quenching

45#- After high-frequenc…
20CrMo- Before high-frequency annealing

20CrMo- Before high-freq…
20CrMo- After high-frequency annealing

20CrMo- After high-frequ…
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