TY - JOUR
T1 - Dynamic mechanical properties of AerMet100 ultra-high strength steel
AU - Zhang, Sheng Nan
AU - Cheng, Xing Wang
N1 - Publisher Copyright:
© 2015, Beijing Institute of Aeronautical Materials (BIAM). All right reserved.
PY - 2015/12/20
Y1 - 2015/12/20
N2 - The AerMet100 ultra-high steel was cryogenic treated after quenched and then was tempered under different temperatures, the OM, SEM and TEM techniques were used to observe the microstructure after heat treatment. The effect of different heat treatments on the dynamic mechanical properties was investigated using the split Hopkinson pressure bar. The results indicate that the content of residual austenite is reduced, the dynamic plasticity is enhanced and the comprehensive properties are improved after cryogenic treatment. Under high strain rate (1000-4200 s-1), compared with the quasi static, material shows strain rate hardening effect obviously. The dynamic compression strength increases initially and then decreases with increasing tempering temperature, the peak value of about 2800 MPa appears when the tempering temperature is 482℃. The material fracture form is the shear fracture when the steel is under the dynamic loading.
AB - The AerMet100 ultra-high steel was cryogenic treated after quenched and then was tempered under different temperatures, the OM, SEM and TEM techniques were used to observe the microstructure after heat treatment. The effect of different heat treatments on the dynamic mechanical properties was investigated using the split Hopkinson pressure bar. The results indicate that the content of residual austenite is reduced, the dynamic plasticity is enhanced and the comprehensive properties are improved after cryogenic treatment. Under high strain rate (1000-4200 s-1), compared with the quasi static, material shows strain rate hardening effect obviously. The dynamic compression strength increases initially and then decreases with increasing tempering temperature, the peak value of about 2800 MPa appears when the tempering temperature is 482℃. The material fracture form is the shear fracture when the steel is under the dynamic loading.
KW - Adiabatic shear band
KW - AerMet100 ultra-high strength steel
KW - Cryogenic treatment
KW - Dynamic mechanical property
UR - http://www.scopus.com/inward/record.url?scp=84954309604&partnerID=8YFLogxK
U2 - 10.11868/j.issn.1001-4381.2015.12.005
DO - 10.11868/j.issn.1001-4381.2015.12.005
M3 - Article
AN - SCOPUS:84954309604
SN - 1001-4381
VL - 43
SP - 24
EP - 30
JO - Cailiao Gongcheng/Journal of Materials Engineering
JF - Cailiao Gongcheng/Journal of Materials Engineering
IS - 12
ER -