ISSN:
1573-8973
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. Quenching and tempering of steels 35, 45, 40Kh, and 40KhNMA with diameters up to 100 mm produce a fracture toughness not less than 3 kg-m/cm2 at −50°C and fairly high strength. 2. To obtain the highest strength and fracture toughness the tempering temperature should be selected in conformity with the cross section of the piece. 3. If a higher toughness than that listed in Table 2 is required then the tempering temperature must be raised, in which case the strength decreases somewhat. 4. Water quenching of steel 40Kh provides not only high strength but usually a higher toughness than quenching in oil. Therefore quenching of steel 40Kh in oil is advisable only for parts of complex shape with sharp changes in cross section.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00658820
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