Effect of high-temperature tempering on resistance to fracture of heat treatable structural steels
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With increasing tempering temperature (in the range of 620–680°C) the strength characteristics decrease monotonically, while the toughness (aC, T50) reaches a peak with tempering at 640°C.
With quenching from the intercritical temperature range the toughness does not reach a maximum value in the presence of more than 5% ferrite.
KeywordsFerrite Structural Steel Strength Characteristic Intercritical Temperature Intercritical Temperature Range
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