Study on the Crack Forming during Cold Forging Process of ML25Mn Steel

Zhuang Li; Di Wu; Wei Lv

doi:10.4028/www.scientific.net/AMM.184-185.1255

Paper Titles

Study on Framework of Environment Adaptive Agent Based Materiel System Reliability Simulation Modeling
p.1236

Study on Plasma Arc Surface Hardening of Alloy Cast Iron
p.1240

Study on Reduction Behavior of Vanadic Titanomagnetite Mixed Coal
p.1244

Study on Surface Nanocrystallization of TiAl Alloys Induced by HEBMT
p.1250

Study on the Crack Forming during Cold Forging Process of ML25Mn Steel
p.1255

Study on the Microstructures and Properties of Middle-Carbon-Steel Rolled Pieces during Cross Wedge Rolling
p.1259

Study on the Oleophobic Characteristics Technology of Fluorined Polyethylenic Microspheres
p.1263

Study on the Surface Quality of Titanium Alloy in Ultrasonic-Assisted EDM Milling
p.1267

Super Wettable Poly(Ethylene Terephthalate)(PET) Fabric Modified by UV/Nano-TiO₂/H₂O₂
p.1272

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 184-185Study on the Crack Forming during Cold Forging...

Study on the Crack Forming during Cold Forging Process of ML25Mn Steel

Abstract:

The important factors that affect the formability of the cold forging steel are its surface quality and internal defects. The cracking phenomenon was taken place during cold forging of ML25Mn steel. In this study, microstructural analyses were made on around the cracked regions of the steel. The reason of cracking, which occurred during cold forging for ML25Mn steel, was investigated based on SEM observation in detail. The results have shown that the crack forming during cold forging process is not related to the chemical composition for ML25Mn steel. Cracking is not resulted from high hardness of the steel rods. There are some non-metallic inclusions in the matrix of ML25Mn steel, and the film-like inclusions are composed of MnS, CaS and complex oxides containing Mg, Al, Mn, Fe, S, Ca and O. The formation of non-metallic inclusions is the result of the deoxidation and the solidification during smelting and casting of steel.

You might also be interested in these eBooks

Frontiers of Mechanical Engineering and Materials Engineering

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 184-185)

Pages:

1255-1258

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.184-185.1255

Citation:

Cite this paper

Online since:

June 2012

Authors:

Zhuang Li, Di Wu, Wei Lv

Keywords:

Cold Forging Steel, Crack Forming, Metallurgical Quality, Non-Metallic Inclusion

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] K.U. Leuven, V. Ignaas, V. Bert, Influence of non-metallic inclusions on the fatigue properties of heavily cold drawn steel wires, Procedia Engineering. 2 (2010) 173-181.

DOI: 10.1016/j.proeng.2010.03.019

Google Scholar

[2] D. K. Kim, S. Y. L. S. Kang,. Analysis and prevention of cracking phenomenon occurring during cold forging of two AISI 1010 steel pulleys, Metall. Trans. A, 30 (1999) 81-92.

DOI: 10.1007/s11661-999-0197-3

Google Scholar

[3] Z. G. Wang, Y. G. Liu, J. H. Chen, Investigation of cleavage fracture initiation in notched specimens of a C–Mn steel with carbides and inclusions, Materials Science and Engineering A, 369 (2004) 181–191.

DOI: 10.1016/j.msea.2003.11.003

Google Scholar