Alloys proposed by Cambridge University, manufactured at Nippon Steel

1
Alloys proposed by Cambridge University,
manufactured at Nippon Steel
wt A B wt A B C 0.116 0.127 P 0.004 0.003
Si 0.014 0.012 S 0.0005 0.0005 Mn 0.47 0.48 Al
lt0.002 lt0.002 Ni 0.02 lt0.01 Ta lt0.001 lt0.001 Cr
8.96 8.66 Ti 0.003 0.004 Cu 0.004 0.003 B 0.
007 0.00064 Mo 0.71 0.30 N 0.0682 0.0705 V 0.22
0.21 O 0.0103 0.0089 Co 1.23 0.003 H 0.00008
lt0.00001 Nb 0.013 0.015 W 3.01
2.96
2
Kasuya, Ichikawa, Fuji and Bhadeshia, 1999
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Kasuya, Ichikawa, Fuji and Bhadeshia, 1999
4
Simultaneous Transformation Kinetics

• Avrami theory
• Adapted for many reactions occurring together
• Ferrite, Widmanstatten ferrite, pearlite.
• Complex carbide-precipitation reactions
• Competition between inter- and intra-granularly
  nucleated reactions
• Some difficulties