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pro vyhledávání: '"Safaa Almtori"'
Publikováno v:
Basrah journal for engineering science. 22:27-32
Four groups of AISI 1020 specimens were heat-treated at 850 °C in a muffle furnace for 30 minutes then quenched in oil. The samples were tempered at 400 °C with a time period for each group as (group B, 2 hours), (group C, 3 hours), and (group D, 4