Steel Forming and Heat Treating Handbook - Antonio Gorni On Line
Steel Forming and Heat Treating Handbook - Antonio Gorni On Line
Steel Forming and Heat Treating Handbook - Antonio Gorni On Line
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<strong>Gorni</strong><br />
<strong>Steel</strong> <strong>Forming</strong> <strong>and</strong> <strong>Heat</strong> <strong>Treating</strong> H<strong>and</strong>book<br />
46<br />
<br />
m<br />
27.2<br />
0.14 Mn 0.21 Si 0.11Cr<br />
0.08 Ni 0.05 Mo 19.8<br />
1 exp( 1.56<br />
C)<br />
<br />
<br />
Notation:<br />
f: Volume Fraction of Martensite as a Function of Undercooling Below Ms Temperature (Ms – T)<br />
T: Temperature [°C]<br />
Ms: Martensite Start Temperature [°C]<br />
Alloy Amount: [weight %]<br />
Observation:<br />
- Formula based from Koistinen <strong>and</strong> Marburger equation.<br />
- αm: St<strong>and</strong>ard error of estimate σ = 0.005 K -1 ; correlation coefficient R² = 0.97.<br />
Source: VAN BOHEMEN, S.M.C. Bainite <strong>and</strong> Martensite Start Temperature Calculated with Exponential Carbon<br />
Dependence. Materials Science <strong>and</strong> Technology, 28:4, April 2012, 487-495.<br />
. Zhao<br />
M TM<br />
s<br />
420 208.33 C 33.428 Mn 1.296 Mn²<br />
0.02167 Mn³<br />
16.08 Ni 0.7817 Ni²<br />
0.02464Ni³<br />
2.473 Cr 30.00 Mo 12.86 Co <br />
0.2654 Co²<br />
0.001547 Co³<br />
7.18 Cu 72.65 N 43.36 N<br />
2<br />
16.28 Ru 1.72 Ru<br />
2<br />
0.08117 Ru<br />
3<br />
M LM<br />
s<br />
540 356.25 C 47.59 Mn 2.25 Mn²<br />
0.0415 Mn³<br />
24.56 Ni 1.36 Ni²<br />
0.0384 Ni³<br />
17.82 Cr 1.42 Cr<br />
21.87 Co 0.468 Co²<br />
0.00296 Co³<br />
16.52 Cu 260.64 N 17.66 Ru<br />
2<br />
17.50 Mo <br />
Notation:<br />
Ms TM : Twinned Martensite Start Temperature [°C]<br />
Ms LM : Lath Martensite Start Temperature [°C]<br />
Alloy Amount: [weight %]
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