Effect of Different Microstructures on the Performance of Air-Cooled Forging Steel 46MnVS5 Fracture Splitting Connecting Rod

Yang, Wei; Wen, Fusheng; Zhang, Chao Lei; Cai, Bao Run; Liu, Ya Zheng

doi:10.4028/www.scientific.net/msf.941.358

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…Although there are a number of materials available in the market that can be used for manufacturing con-rods, the material used should be carefully selected and it should have good mechanical properties [32]. 42CrMoA has a good combination of strength and toughness in the quenched and tempered conditions [24].…”

Section: 1materialsmentioning

confidence: 99%

A Study on the Fatigue Strength of a Low-Speed Diesel Engine Connecting Rod Made of 42CrMoA

Helal

Zhang

et al. 2020

JERA

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In recent years, diesel engine is developing rapidly in the direction of high power and super long stroke, which requires higher strength of its key moving parts. Connecting rod is one of the key moving parts of diesel engine which is subjected to complex alternating load during the working process. This loading condition has a great influence on its structural strength and reliability. In the proposed study, the strength and fatigue of a low-speed diesel engine con-rod made of 42CrMoA are analyzed. The 3-D model of the con-rod assembly built in the proposed study. The stress distribution and deformation of the con-rod assembly under the maximum explosive pressure are presented and studied. In the present paper, fatigue safety factor of all parts of con-rod assembly under the maximum explosive pressure condition is checked. According to the results carried out from the proposed work, the corresponding alternating stress is 340MPa, while the fatigue limit of 42CrMo material is above 430-540MPa, which means that the con-rod parts work under the alternating stress far below the fatigue limit. The kirasushvili method is adopted in the present paper as the standard of safety factor evaluation of con-rod. According to the allowable safety factor table of kirasushvili method, the minimum safety factor of the big and small ends of the con-rod and rod body can meet the requirements without fatigue damage.

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Section: 1materialsmentioning

confidence: 99%

A Study on the Fatigue Strength of a Low-Speed Diesel Engine Connecting Rod Made of 42CrMoA

Helal

Zhang

et al. 2020

JERA

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Study on the effect of three-dimensional crack initiation and propagation and plastic zone of crack front on fracture-splitting quality of connecting rod

Deng,

Kong,

Lei

et al. 2024

J Mech Sci Technol

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Comparative analysis of the fracture splitting deformation of the big end for C70S6, 36MnVS4 and 46MnVS5 connecting rods

Liu

Kou

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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During the fracture splitting process of the connecting rod, the plastic deformation, especially the plastic deformation before cracking, not only causes the big end hole of the connecting rod to be out of roundness, but also increases the residual stress, affecting the assembly precision and even the service life of the connecting rod. In this paper, the mechanical properties of microalloyed steel C70S6, 36MnVS4 and 46MnVS5 connecting rod were determined by tensile test. The displacement field, plastic strain and the deformation principle of the big end before the crack initiation of the fracture splitting of the connecting rod were numerically simulated. The results show that the yield strength, tensile strength and plasticity index of the new medium carbon microalloyed steels 46MnVS5 and 36MnVS4 are significantly higher than those of C70S6. However, the C70S6 connecting rod has a long loading time before crack initiation, and the plastic deformation area of the groove root front is large and the strain is high. The plastic deformation of 36MnVS4 and 46MnVS5 connecting rods is small and the area is concentrated. Among the three, the 46MnVS5 connecting rod has the smallest deformation and the C70S6 connecting rod has the largest deformation.

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Effect of Different Microstructures on the Performance of Air-Cooled Forging Steel 46MnVS5 Fracture Splitting Connecting Rod

Cited by 3 publications

References 9 publications

A Study on the Fatigue Strength of a Low-Speed Diesel Engine Connecting Rod Made of 42CrMoA

A Study on the Fatigue Strength of a Low-Speed Diesel Engine Connecting Rod Made of 42CrMoA

Study on the effect of three-dimensional crack initiation and propagation and plastic zone of crack front on fracture-splitting quality of connecting rod

Comparative analysis of the fracture splitting deformation of the big end for C70S6, 36MnVS4 and 46MnVS5 connecting rods

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