Effect of finish rolling temperature on microstructures and mechanical properties of 1000 MPa grade tempered steel plate for hydropower station

2021 ◽  
Vol 67 ◽  
pp. 1-11
Author(s):  
Changsheng Li ◽  
Jie Chen ◽  
Xingyang Tu ◽  
Yahui Han
Keyword(s):  
Mechanical Properties ◽  
Steel Plate ◽  
Rolling Temperature ◽  
Hydropower Station ◽  
Finish Rolling Temperature ◽  
Finish Rolling ◽  
Microstructures And Mechanical Properties ◽  
Tempered Steel

Influence of Finish-Rolling Conditions on Microstructure and Mechanical Properties of Low-Alloy Mn-Ni-Cr-Mo Steel Grade

2011 ◽  
Vol 465 ◽  
pp. 386-389
Author(s):  
Petr Kawulok ◽  
Rostislav Kawulok ◽  
Ivo Schindler ◽  
Jaroslav Sojka ◽  
Martin Kraus ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Physical Simulation ◽  
Thermomechanical Processing ◽  
Tensile Tests ◽  
Ultimate Tensile Stress ◽  
Rolling Temperature ◽  
Air Cooling ◽  
Slow Cooling ◽  
Finish Rolling Temperature ◽  
Finish Rolling

A physical simulation of the thermomechanical processing of the Mn-Ni-Cr-Mo low-alloy steel was performed in the laboratory rolling mill Tandem in the Institute of Modelling and Control of Forming Processes at VŠB – Technical University of Ostrava. The task was to determine the influence of the finish rolling temperature on the structural and mechanical properties of the rolled products. After different modes of rolling and slow cooling in the furnace, the final structure of the tested samples was in all cases composed of ferrite, bainite and islands of martensite. The finish rolling temperature markedly influenced a part by volume of the individual phases as well as the structure homogeneity. The results of the tensile tests at room temperature indicated that the studied steel did not show any pronounced dependence of the yield stress on the finish rolling temperature in the investigated range of values (750 – 1000 °C). On the other hand, the closely corresponding dependences of the ultimate tensile stress and elongation exhibited a considerable and very complex course, which can be explained mainly by the martensite fraction originating during the last stage of the final air cooling from temperature 600 °C.

The Effect of Finish Rolling Temperature on Microstructure and Mechanical Properties of Vanadium Containing Ferritic Stainless Steel

2013 ◽  
Vol 690-693 ◽  
pp. 176-181
Author(s):  
Si Yue Chen ◽  
Jing Xu ◽  
Xin Zhang ◽  
Yi Tao Yang
Keyword(s):  
Mechanical Properties ◽  
Adverse Effect ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Rolling Temperature ◽  
Wrinkle Resistance ◽  
Finish Rolling Temperature ◽  
Microstructure And Mechanical Properties ◽  
Finish Rolling

In this paper, the influence of finish rolling temperature during hot rolling on microstructure and mechanical properties of ferritic stainless steel containing vanadium was investigated. It showed that with the rolling temperature increasing, the tensile strength and hardness value fell down, while the value of ductility rising and less precipitates appearing. If the finish rolling temperature was set too high, the grain would get coarsened and the α-fiber get strengthened, which had an adverse effect on the formability and wrinkle resistance of the production sheet. 850°C was a reasonable finish rolling temperature.

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