scholarly journals Optimization of Thermal and Deformation Effect during Plastic Deformation and Thermal Treatment of Hot Rolled Heavy Wall Pipes Made of Medium Carbon Martensitic Steel

2017 ◽  
Vol 287 ◽  
pp. 012015 ◽  
Author(s):  
A I Ziza ◽  
V V Tsukanov
Keyword(s):  
Plastic Deformation ◽  
Thermal Treatment ◽  
Martensitic Steel ◽  
Deformation Effect ◽  
Medium Carbon ◽  
Hot Rolled ◽  
Carbon Martensitic Steel

Characterization of Hydrogen-Related Fracture Behavior in As-Quenched Low-Carbon Martensitic Steel and Tempered Medium-Carbon Martensitic Steel

2015 ◽  
Vol 46 (12) ◽  
pp. 5685-5696 ◽  
Author(s):  
Akinobu Shibata ◽  
Tamotsu Murata ◽  
Hiroshi Takahashi ◽  
Takahiro Matsuoka ◽  
Nobuhiro Tsuji
Keyword(s):  
Fracture Behavior ◽  
Martensitic Steel ◽  
Low Carbon ◽  
Medium Carbon ◽  
Carbon Martensitic Steel

scholarly journals Microstructure Evolution and Mechanical Properties of Medium Carbon Martensitic Steel during Warm Rolling and Annealing Process

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6900
Author(s):  
Guolong Liu ◽  
Jingbao Liu ◽  
Jie Zhang ◽  
Minghe Zhang ◽  
Yunli Feng
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Yield Strength ◽  
Martensitic Steel ◽  
Total Elongation ◽  
Warm Rolling ◽  
Annealing Process ◽  
Medium Carbon ◽  
Carbon Martensitic Steel

The microstructure evolution and mechanical properties of medium carbon martensitic steel during the warm rolling and annealing process were studied by scanning electron microscope (SEM), electron back scattering diffraction (EBSD), and electronic universal testing machine. The results showed that the microstructure of ferrite matrix with mass dispersive cementite particles was obtained by decomposition of martensitic in medium-carbon martensitic steel after warm rolling. The grain size of ferrite was ~ 0.53 μm, the yield strength and tensile strength were 951 MPa and 968 MPa, respectively, and the total elongation rate was 11.5% after warm rolling at 600 °C. Additionally, after the next 4 h of annealing, the grain size of ferrite and particle size of cementite increased to ~1.35 μm and ~360 nm and the yield strength and tensile strength decreased to 600 MPa and 645 MPa, respectively, with a total elongation increases of 20.9%. The strength of the material increased with increasing strain rate in tension, and the yield-to-tensile strength ratio increased from 0.92 to 0.94 and maintained good plasticity.

TEM Study of Martensite Microstructure in the Junctions of Laths in Low-Carbon Chromium Steel after LCF III

2019 ◽  
Vol 827 ◽  
pp. 306-311
Author(s):  
Tamaz Eterashvili ◽  
T. Dzigrashvili ◽  
M. Vardosanidze
Keyword(s):  
Plastic Deformation ◽  
Deformation Process ◽  
Martensitic Steel ◽  
Chromium Steel ◽  
Low Carbon ◽  
Slip Bands ◽  
Microcrack Initiation ◽  
The Individual ◽  
Martensite Microstructure ◽  
Carbon Martensitic Steel

TEM study of junctions between martensite packets (laths) and their microstructure in low-carbon martensitic steel were studied. It was revealed that formation of slip bands commences at junctions between laths. Heavy changes in microstructure occur at junctions of packets and in the near-boundary laths because of plastic deformation of martensite. A number of typical junctions between the laths after LCF are considered. Deformation process within the individual packet occurs inhomogeneously, some of the laths deform more heavily than the others. The coarser slip bands group within large laths and run along their whole lengths. It was shown that the above microstructure changes strongly affect the cyclic fracture of the steel. Some concrete sites of microcrack initiation are indicated.

Advanced quantification of the carbide spacing and correlation with dimple size in a high-strength medium carbon martensitic steel

2020 ◽  
Vol 167 ◽  
pp. 110531
Author(s):  
Frank Tioguem ◽  
Franck N'guyen ◽  
Matthieu Mazière ◽  
Franck Tankoua ◽  
André Galtier ◽  
...  
Keyword(s):  
Martensitic Steel ◽  
High Strength ◽  
Dimple Size ◽  
Medium Carbon ◽  
Strength Medium ◽  
Carbon Martensitic Steel

Observations on the structure at the transformation interface of pearlite in steel

1990 ◽  
Vol 48 (4) ◽  
pp. 200-201
Author(s):  
F. A. Khalid ◽  
D. V. Edmonds
Keyword(s):  
Room Temperature ◽  
Thin Foil ◽  
Carbon Steels ◽  
Model Alloy ◽  
Growth Interface ◽  
Medium Carbon ◽  
Solution Treated ◽  
Medium Carbon Steels ◽  
Alloy Carbide ◽  
Hot Rolled

The austenite/pearlite growth interface in a model alloy steel (Fe-1 lMn-0.8C nominal wt%) is being investigated. In this particular alloy pearlite nodules can be grown isothermally in austenite that remains stable at room temperature, thus facilitating examination of the transformation interfaces. This study presents preliminary results of thin foil TEM of the austenite/pearlite interface, as part of a programme of aimed at studying alloy carbide precipitation reactions at this interface which can result in significant strengthening of microalloyed low- and medium- carbon steels L Similar studies of interface structure, made on a partially decomposed high- Mn austenitic alloy, have been reported recently.The experimental alloys were made as 50 g argon arc melts using high purity materials and homogenised. Samples were hot- rolled, swaged and machined to 3mm diameter rod, solution treated at 1300 °C for 1 hr and WQ. Specimens were then solutionised between 1250 °C and 1000 °C and isothermally transformed between 610 °C and 550 °C for 10-18 hr and WQ.

Sign in / Sign up

Export Citation Format

Share Document