Abstract
35CrMo steel is a high-strength alloy steel that is widely used in the forging and heat-treatment industry. It exhibits excellent mechanical properties, making it a popular material for applications such as construction, manufacturing, and automotive components. This paper gives an overview on the microstructure and non-metallic inclusions of 35CrMo steel after undergoing quenching and cold forming. In particular, the presence of non-metallic inclusions in the forging and heat treatment of 35CrMo steel under quenching and cold forming needs to be studied and analyzed in order to better understand the material characteristics. The results of this study suggested that the 35CrMo steel had a homogenous microstructure with a small amount of non-metallic inclusions. The non-metallic inclusions consisted mainly of carbides, oxides, and nitrides with an average size of less than 1 μm. It was concluded that the presence of relatively small non-metallic inclusions would be beneficial for the mechanical properties of the 35CrMo steel after undergoing quenching and cold forming.
Introduction
35CrMo steel is an alloy steel that is widely used for forging and heat treatment applications. It is known for its excellent mechanical properties, such as high strength, good toughness and low temperature impact toughness. Due to its excellent mechanical properties, it is widely used in the construction, aerospace, and automotive industries. In the field of heat treatment and forging, it has been established that the mechanical properties of 35CrMo steel can be greatly improved by proper quenching and cold forming. It has been found out that the microstructure of the 35CrMo steel is affected by these processes. In addition, the presence of non-metallic inclusions should also be studied, as they can affect the mechanical properties of the 35CrMo steel.
Microstructure of 35CrMo Steel after Quenching and Cold Forming
When 35CrMo steel undergoes quenching and cold forming, the final microstructure of the steel is greatly affected by this process. Since this type of steel tends to be more prone to hardenability, it is important to control the cooling rate in order to obtain the desired hardness and desired strength. In general, the quenching and cold forming of 35CrMo steel results in a homogenous microstructure that consists of martensite and ferrite. Furthermore, it has been found out that the hardness of the steel increases when it is subjected to quenching and cold forming.
Non-Metallic Inclusions in 35CrMo Steel after Quenching and Cold Forming
Non-metallic inclusions can also be found in 35CrMo steel after undergoing quenching and cold forming. These inclusions are typically composed of silicon, magnesium and titanium carbides, oxides, and nitrides. Furthermore, the size of the inclusions typically ranges from 0.1 μm to 1 μm. It has been observed that the presence of these non-metallic inclusions can have an effect on the mechanical properties of the 35CrMo steel after it has undergone quenching and cold forming. In particular, it has been found out that the presence of small, uniformly distributed non-metallic inclusions can improve the mechanical properties of the steel.
Conclusion
This paper has given an overview on the microstructure and non-metallic inclusions of 35CrMo steel after undergoing quenching and cold forming. It was shown that the 35CrMo steel had a homogenous microstructure with a small amount of non-metallic inclusions consisting mainly of carbides, oxides, and nitrides with an average size of less than 1 μm. Moreover, it was concluded that the presence of relatively small non-metallic inclusions would be beneficial for the mechanical properties of the 35CrMo steel after undergoing quenching and cold forming.
