Mechanical Behavior of High-Mn Steels Processed by Hot Rolling

2018 ◽  
Vol 941 ◽  
pp. 299-304
Author(s):  
Andrey Belyakov ◽  
Pavel Dolzhenko ◽  
Marina Tikhonova ◽  
Vladimir Torganchuk ◽  
Rustam Kaibyshev
Keyword(s):  
Mechanical Properties ◽  
Total Elongation ◽  
Rolled Steel ◽  
Strengthening Mechanisms ◽  
Hot Plate ◽  
Plate Rolling ◽  
Hot Rolled ◽  
Hot Rolled Steel ◽  
Stacking Fault Energies ◽  
Strength And Ductility

The mechanical properties of Fe-28%Mn-1.5%Al and Fe-0.6%C-18%Mn-1.5%Al-0.07%Nb (all in wt.%) steels subjected to hot plate rolling at a temperature of 1423 K with a total reduction of 60% were studied. The steels exhibited quite different mechanical properties in spite of almost the same original microstructures and similar stacking fault energies. The yield strength and total elongation of the Fe-28%Mn-1.5%Al steel are about 260 MPa and 45%, respectively, whereas those properties in the Fe-0.6%C-18%Mn-1.5%Al-0.07%Nb steel comprise 350 MPa and 53%, respectively. The tensile flow stress vs strain curves of the hot rolled steel samples can be described by Ludwigson-type relations with parameters being dependent on the strengthening mechanisms. Frequent deformation twinning in the Fe-0.6%C-18%Mn-1.5%Al-0.07%Nb steel promoted the strain hardening and improved the strength and ductility.

Microstructure Evolution and Mechanical Properties of 67GPa•% Grade Medium Manganese Steel

2021 ◽  
Vol 1035 ◽  
pp. 404-409
Author(s):  
Zhe Rui Zhang ◽  
Ren Bo Song ◽  
Nai Peng Zhou ◽  
Wei Feng Huo
Keyword(s):  
Mechanical Properties ◽  
Microstructure Evolution ◽  
Annealing Temperature ◽  
High Strength ◽  
Total Elongation ◽  
Manganese Steel ◽  
Experimental Steel ◽  
Medium Manganese Steel ◽  
Hot Rolled ◽  
Hot Rolled Steel

In this study, a new Fe-6Mn-4Al-0.4C high strength medium manganese hot rolled steel sheet was designed. The influence mechanism of the intercritical annealing (IA) temperature on microstructure evolution and mechanical properties of experimental steel were studied by SEM and XRD. The experimental steel was held for 30 minutes at 640°C, 680°C, 720°C, 760°C, 800°C, respectively. When the annealing temperature was 640°C, cementite particles precipitated between the austenite and ferrite phase boundary. As the annealing temperature increased, the cementite gradually dissolved and disappeared, the fraction of lamellar austenite increased significantly. When the annealing temperature is 800°C, the coarse equiaxed austenite and ferrite appeared. The yield strength (YS) decreased, the product of strength and elongation (PSE) and total elongation (TE) both increased first and then decreased, while the ultimate tensile strength (UTS) showed the opposite trend. The experimental steel exhibited excellent comprehensive mechanical properties after held at 760°C for 30 min. The UTS was 870 MPa, the YS was 703 MPa, and the TE was 77 %, the PSE was 67 GPa·%.

Improving the mechanical properties of hot-rolled steel 10KhSND

Metallurgist ◽  
1973 ◽  
Vol 17 (1) ◽  
pp. 27-28
Author(s):  
V. A. Nikitskaya ◽  
L. L. Pyatakova ◽  
N. A. Poltavets ◽  
S. A. Shubina ◽  
L. M. Kuznetsova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Rolled Steel ◽  
Steel 10Khsnd ◽  
Hot Rolled ◽  
Hot Rolled Steel

Study on Microstructure and Mechanical Properties of Hot Rolled Steel Plate Strengthened Complexly by Titanium and Molybdenum

2011 ◽  
Vol 299-300 ◽  
pp. 197-201
Author(s):  
Hong Bin Wang ◽  
Sheng Li Li ◽  
Chun Tang Niu
Keyword(s):  
Mechanical Properties ◽  
Acicular Ferrite ◽  
Steel Plate ◽  
Polygonal Ferrite ◽  
Rolled Steel ◽  
Coiling Temperature ◽  
Final Rolling Temperature ◽  
Final Rolling ◽  
Hot Rolled ◽  
Hot Rolled Steel

Microstructure and mechanical properties of hot rolled steel plate strengthened complexly by titanium and molybdenum at different final rolling temperature and coiling temperature were studied by optical microscope (OM) and material testing machine. The precipitation behaviors of precipitates phase were obtained using transmission electron microscope (TEM) with EDS analysis. The results showed that at final temperature 850°C, microstructure of experimental steel were fine, uniform polygonal ferrite and acicular ferrite. With the coiling temperature decreasing from 620°C to 580 °C, the grain of polygonal ferrite became finer, and the amounts of acicular ferrite became more; precipitates phase mainly maintained both coarse TiN and small square round sheet (Ti,Mo)C. On the condition of the final rolling temperature (850°C) and coiling temperature (580°C), experimental steel acquired properties as follows: yield strength 608 MPa, tensile strength 720 MPa, elongation 24%. Ti-Mo composite strengthening effect had achieved, and significantly improved the strength of ferrite steel.

scholarly journals Production Technology and Mechanical Properties of High Strength Hot Rolled Steel Sheets

1982 ◽  
Vol 68 (9) ◽  
pp. 1290-1296
Author(s):  
Isao TAKAHASHI ◽  
Nobuo AOYAGI ◽  
Shoichi TAKIZAWA ◽  
Masayoshi KUWAGATA ◽  
Minoru NISHIDA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Production Technology ◽  
High Strength ◽  
Rolled Steel ◽  
Steel Sheets ◽  
Hot Rolled ◽  
Hot Rolled Steel
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