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>The Effect of Alloying with Molybdenum on the Corrosion-Cracking Resistance of a #GAMMA#20#PHI#2 Type Manganese Steel Against
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The Effect of Alloying with Molybdenum on the Corrosion-Cracking Resistance of a #GAMMA#20#PHI#2 Type Manganese Steel Against
Molybdenum, which is introduced in amount of 2 to 6percent into manganese steel of the basic composition (0.15-0.25) #GAMMA#20#PHI#2, enhances its strength upon the maximum age-hardening at 650 deg C (to #sigma#_y= 1300 MPa). However, its stress-corrosion cracking resistance in a 3.5percent NaCl solution increases insufficiently (1500 h at a stress of 40 to 50percent breaking stress in air #sigma#_(air)). After the overaging (prolonged exposures at 750 deg C), steel (with any aforementioned molybdenum content) does not fail in the test medium in 4000 h at G = 0.8 #sigma#_(air).
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