Shear and tensile plastic behavior of austenitic steel TRIP-120 compared with martensitic steel HSLA-100

被引:9
作者
Latourte, F. [1 ]
Feinberg, Z. [2 ]
Mori, L. F. [1 ]
Olson, G. B. [2 ]
Espinosa, H. D. [1 ]
机构
[1] Northwestern Univ, Dept Mech Engn, Evanston, IL 60201 USA
[2] Northwestern Univ, Dept Mat Sci, Evanston, IL 60201 USA
关键词
TRIP steels; Martensitic steels; Shear bands; Dynamic fracture; Phase transformation; NAVAL SHIP CONSTRUCTION; MECHANICAL-PROPERTIES; TRANSFORMATION PLASTICITY; RETAINED AUSTENITE; HULL STEELS; STRAIN-RATE; CERTIFICATION; FRACTURE; TEMPERATURE; BANDS;
D O I
10.1007/s10704-010-9472-y
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The mechanical performance of TRIP-120 a novel transformation induced plasticity steel alloy, is evaluated for different loading cases and strain rates. The performance is compared with HSLA-100, a low-alloy steel developed by the United States Navy and currently used in naval hulls. The response of these materials under uniaxial tension and shear was investigated to the point of fracture at isothermal and adiabatic conditions. TRIP-120 shows a significant improvement in dissipated energy at fracture compared to HSLA-100. SEM images of ductile fracture surfaces for tensile and torsion samples of both TRIP-120 and HSLA-100 are compared, and the presence of transformed martensite in the TRIP-120 dynamic torsion specimens is confirmed with optical microscopy and magnetometry.
引用
收藏
页码:187 / 204
页数:18
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