Effect of Nb addition on microstructure and mechanical properties of 25CrNiMoV (DZ2) steel for high-speed railway axles

2021 ◽  
Author(s):  
Jin-wen Zhang ◽  
Yan-guang Cao ◽  
Cheng-guo Zhang ◽  
Zhao-dong Li ◽  
Wen-xian Wang
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Railway ◽  
Microstructure And Mechanical Properties ◽  
Nb Addition

The Study on Mechanical Properties of the Graded Broken Stone Mixed with Cement and Fine Powder

2014 ◽  
Vol 905 ◽  
pp. 230-234
Author(s):  
Jun Lei Tian ◽  
Yan Ke Yang ◽  
Yi Ping Hu ◽  
Jian Qiang Cheng
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Regression Analysis ◽  
Flexural Strength ◽  
High Speed ◽  
Fine Powder ◽  
Frozen Soil ◽  
Power Exponent ◽  
High Speed Railway ◽  
Railway Passenger

Ha Tai railway passenger dedicated line is a national key project of the eleventh five-year plan. Its different from other construction of high-speed railway because there is many frozen soil over the place. The requirement of the subgrade material is higher.We proposed a idea that gradred broken stone mixed with cement and fine powder applied in the project.The compressive strength,splitting tensile strength and flexural strength were studied and analyzed through laboratory test.And regression analysis between compressive strength and flexural strength was made .According to the regression analysis,a power exponent function between flexural strength and compressive strength was got.Based on this,the corresponding relationship table was deduced,which can be used in practical projects.

Effect of Electromagnetic Stirring on the Microstructure and Mechanical Properties of the High Speed Steel

2012 ◽  
Vol 724 ◽  
pp. 291-294 ◽  
Author(s):  
Cong Rong Zhang ◽  
Xu Ding Song ◽  
Jun Yang ◽  
Jie Dong
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Electromagnetic Stirring ◽  
Microstructure Refinement ◽  
Comprehensive Properties ◽  
Microstructure And Mechanical Properties

In order to improve the microstructure and mechanical properties of High Speed Steel (HSS), electromagnetic stirring method is adopted to enhance the solidification of target materials in this paper. The results show that optimization of the microstructure, refinement of the grain, reducing in segregation of the alloy elements, and improvement of the comprehensive properties of HSS can be obtained by the electromagnetic stirring through changing the morphology and distribution of the carbide.

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