Influence of Production Factors on the Mechanical Properties of Ti-Bearing Steels

2020 ◽  
Author(s):  
B. Ensor ◽  
C. Dyar ◽  
K. Wright ◽  
K. Vanover ◽  
D. Tsvetkov
Keyword(s):  
Mechanical Properties ◽  
Production Factors ◽  
Bearing Steels

scholarly journals Chemical reactions during sintering of Fe-Cr-Mn-Si-Ni-Mo-C-steels with special reference to processing in semi-closed containers

2015 ◽  
Vol 47 (1) ◽  
pp. 61-69 ◽  
Author(s):  
A. Cias
Keyword(s):  
Mechanical Properties ◽  
Carbon Monoxide ◽  
Special Reference ◽  
Water Vapour ◽  
Chemical Reactions ◽  
Thermodynamic Data ◽  
Alloying Elements ◽  
Bearing Steels ◽  
Kinetics Of

Sintering of Cr, Mn and Si bearing steels has recently attracted both experimental and theoretical attention and processing in semiclosed containers has been reproposed. This paper brings together relevant thermodynamic data and considers the kinetics of some relevant chemical reactions. These involve iron and carbon, water vapour, carbon monoxide and dioxide, hydrogen and nitrogen of the sintering atmospheres and the alloying elements Cr, Mn, Mo and Si. The paper concludes by presenting mechanical properties data for three steels sintered in local microatmosphere with nitrogen, hydrogen, nitrogen-5% hydrogen and air as the furnace gas.

The Study on the Precipitation and Mechanical Properties of Steel with Copper

2010 ◽  
Vol 654-656 ◽  
pp. 66-69 ◽  
Author(s):  
Chuang Li ◽  
Xue Min Wang ◽  
Xin Lai He ◽  
Cheng Jia Shang ◽  
Yu He
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Volume Fraction ◽  
Optical Microscope ◽  
Second Phase ◽  
Phase Precipitation ◽  
Precipitation Behavior ◽  
Quenching Temperature ◽  
Bearing Steels ◽  
Transition Electron

The properties and precipitation behavior of Cu-bearing steels have been investigated. The optical microscope and transition electron microscope were employed to study the influence of interrupted cooling and quenching temperature on the precipitation behavior. Also, the properties of samples with different quench processes were tested. The results show that when the steel is interruptedly cooled and quenched from 650-700°C, with the quenching temperature increasing the volume fraction of martensite becomes larger and the hardness becomes higher. When the microstructure is ferrite the second-phase precipitates occurs and they are proved copper-rich particles. However there are no obvious precipitates in martensite. The copper-rich second phase forms by the way of inter-phase precipitation.

Effect of Mn and Si on the Microstructure and Mechanical Properties of Bearing Steel

2014 ◽  
Vol 936 ◽  
pp. 1229-1233
Author(s):  
Min Wang ◽  
Guang Xu ◽  
Zheng Liang Xue ◽  
Tao Xiong ◽  
Ming Xing Zhou
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Induction Furnace ◽  
Bearing Steel ◽  
Vacuum Induction Furnace ◽  
Microstructure Changes ◽  
Bearing Steels ◽  
Microstructure And Mechanical Properties ◽  
Transverse Property ◽  
Si Content

Two bearing steels, with higher Mn and Si content than GCr15, were refined in 50kg vacuum induction furnace followed by multi-pass rolling to 12mm thick flat on two-high mill. Mechanical properties and microstructures were measured and observed. The results show that higher content of Mn and Si decreases the martensite starting temperature (Ms), which is beneficial to the forming of martensite. The microstructure changes from martensite plus troostite to martensite, leading to higher hardness of steel and improvement of wear resistance. However, the band microstructure is easily formed by increase of Mn and Si, which is harmful to transverse property.

scholarly journals High Nitrogen Martensitic Steels a New Family of Martensitic Corrosion Resistant Steels for Improved Aerospace Bearing Performance

1992 ◽  
Author(s):  
Werner Trojahn
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Martensitic Steels ◽  
High Nitrogen ◽  
Corrosion Resistant ◽  
New Family ◽  
Bearing Steels ◽  
Bearing Life ◽  
Cr Steels

The need for greater reliablity of corrosion resistant bearings, especially in aerospace and aircraft applications, has led to the development of 15 % Cr-steels with 1 % Mo. A partial exchange of carbon by nitrogen improves corrosion resistance, mechanical properties and bearing life as compared to conventional stainless bearing steels.

Mechanical properties of bearing steels at high temperatures

1972 ◽  
Vol 14 (9) ◽  
pp. 822-824
Author(s):  
Yu. A. Shul'te ◽  
�. I. Tsivirko ◽  
I. A. Garevskikh ◽  
V. I. Gontarenko ◽  
S. I. Adamchuk
Keyword(s):  
Mechanical Properties ◽  
High Temperatures ◽  
Bearing Steels
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