XU Zuyao(T.Y.Hsu) PAN Mu Shanghai Jiaotong University
,
Shanghai
,
China Correspondent:XU Zuyao(T.Y.Hsu) Professor
,
Department of Materials Science
,
Shanghai Jiaotong University
,
Shanghai
,
China
金属学报(英文版)
A Central Atom Model is introduced and the LFG and Hsu models are modified in order to evaluate the driving force for the martensitic transformation in Fe-Mn-C and Fe-Ni-C al- loys.The results show that the relationship between the driving force and the yield strength of austenite at Ms temperature,σ_(0.2)~γ/M_s,fits Hsu's formula;ΔG~=2.1σ_(0.2)~γ/M_s+907 J/mol.The M_s temperatures of Fe-Mn-C and Fe-Ni-C alloys are also calculated.The calculated results are in good agreement with experimental values.
关键词:
Fe-Mn-C alloy
,
null
,
null
PAN Mu XU Zuyao (T.Y.Hsu) Shanghai Jiaotong University
,
Shanghai
,
China XU Zuy(T.Y.Hsu)
,
Professor
,
Dept.of Materials Science
,
Shanghai Jiaotong University
,
Huashan Road
,
Shanghai 200030
,
China
金属学报(英文版)
The M_s temperature and the yield strength of austenite at M_s temperature have been meas- ured for five Fe-Mn-C alloys.The experimental results show that there is a linear relation- ship between them.The effect of the solution strengthening of austenite on martensite morphology is also studied.It is pointed out that there is a characteristic temperature T_c in austenite strengthening.Martensite morphology is mainly of dislocated laths when M_s>T_c, and is mainly of twinned plates when M_s
关键词:
Fe-Mn-C alloy
,
null
,
null
