An investigation into the effect of surface integrity on the fatigue failure of AISI 4340 steel in different drilling strategies

Amir, Rasti; Sadeghi, Mohammad; Farshi, Sina Sabbaghi

doi:10.1016/j.engfailanal.2018.08.022

Cited by 20 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The aforementioned thermomechanical load in the chipformation zone also affects the workpiece quality by impairing surface integrity, typically in the form of white layers, leading to high tensile residual stresses, microcracks and thus, reduced fatigue strength in the highly stressed component. Therefore, the development and implementation of a favorable cooling strategy is essential for improving drilling processes by enhanced heat evacuation from the chip-formation zone [7][8][9][10][11][12].…”

Section: Characteristic Challenges and New Approaches To Drilling Inc...mentioning

confidence: 99%

Influence of a Discontinuous Process Strategy on Microstructure and Microhardness in Drilling Inconel 718

Wolf

Iovkov

Biermann

2021

JMMP

View full text Add to dashboard Cite

Nickel-base alloys are proven materials in the fields of the aerospace and oil industry, which is due to their characteristic material properties of high temperature strength, high toughness and good oxidation resistance. These properties are beneficial to applications in technical components in general. However, they also represent challenges for machining. Especially while drilling Inconel 718, high temperatures occur in the chip-formation zone that implicate high thermal load in the material and thus, influence the surface integrity, for example, by causing white layers. Hence, the development of strategies to improve the ability to supply cutting edges with cooling lubricant is becoming increasingly important. In this context, an alternative process design, the discontinuous drilling, takes place, characterized by a periodic interruption of feed motion and thus, chip formation. A minor retraction movement from the contact zone enables the cooling lubricant to reach the cutting edges and to reduce their thermal load. In comparison to the conventional process of drilling Inconel 718, the effects of discontinuous drilling with varying numbers of interruptions on the resulting surface integrity and further parameters of drilling qualities are analyzed. Thereby, the prevention of process-related phase transformations due to thermal impact was discovered when a discontinuous drilling strategy was implemented.

show abstract

Section: Characteristic Challenges and New Approaches To Drilling Inc...mentioning

confidence: 99%

Influence of a Discontinuous Process Strategy on Microstructure and Microhardness in Drilling Inconel 718

Wolf

Iovkov

Biermann

2021

JMMP

View full text Add to dashboard Cite

show abstract

Influence of the Feed Rate in the Single-Lip Deep Hole Drilling Process on the Surface Integrity of Steel Components

Nickel

Baak

Walther

et al. 2019

Lecture Notes in Mechanical Engineering

View full text Add to dashboard Cite

Finite element prediction of fatigue lifetime for different hole making strategies

2019

View full text Add to dashboard Cite

An investigation into the effect of surface integrity on the fatigue failure of AISI 4340 steel in different drilling strategies

Cited by 20 publications

References 21 publications

Influence of a Discontinuous Process Strategy on Microstructure and Microhardness in Drilling Inconel 718

Influence of a Discontinuous Process Strategy on Microstructure and Microhardness in Drilling Inconel 718

Influence of the Feed Rate in the Single-Lip Deep Hole Drilling Process on the Surface Integrity of Steel Components

Finite element prediction of fatigue lifetime for different hole making strategies

Contact Info

Product

Resources

About