Influence of laser surface engineering of AISI P20-improved mold steel on wear and corrosion behaviors

Park, Changkyoo; Sim, Ahjin; Ahn, Sanghoon; Kang, Hee-Shin; Chun, Eun−Joon

doi:10.1016/j.surfcoat.2019.08.006

Cited by 25 publications

(4 citation statements)

References 27 publications

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“…The LSQ modi ed surface of steel is found to possess three distinct zones in quenching layers: quenched zone, intermediate zone and thermally affected zone [7,19]. A detailed analysis of strengthening phases, element and phase distribution in quenched zone shall be important for the process optimization and performance improvement.…”

Section: Microstructure and Phase Compositionmentioning

confidence: 99%

“…Such conditions lead a set of severe adverse conditions involving corrosion, erosion, thermal fatigue and abrasive/adhesive wear, etc., and greatly reduce the service life of the molds. [5][6] A surface treatment of AISI P20 to strengthen and hardening up to 57-60 HRC can improve the service life by 1 million times [7]. The adverse service conditions require careful selection of effective treatment process which can effectively control of thickness, hardness, interface bonding and ability to endure the environment.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Zhang

Liu

et al. 2021

Preprint

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Laser surface quenching (LSQ) was performed on AISI P20 mould and hot-working die steel with an objective to improve surface characteristics. The steel was treated under three different process parameter conditions. The microstructure, element distribution and residual stresses were investigated through SEM, EDS and XRD analyses. The effect of laser energy density on carbide dissolution/ablation, microstructure evolution were thoroughly investigated. The dissolution/ablation of carbides significantly affected the formation of martensite and retained austenite, and the distribution of elements and phase in the microstructure. The results of the study and analyses of treated surface revealed that the LSQ treatment significantly improved the microstructure, eliminated the pores or other defects. Furthermore, the degree of carbide dissolution/ablation was closely related to the laser energy density. Comparing to Cr7C3, Cr3C2 was more difficult to dissolve at lower laser energy density. Thus, those incompletely dissolved Cr3C2 would hinder the growth of austenite and reduce the carbon content in austenite and lead to the formation of low-carbon martensite. The highest laser energy density (150 J/mm2), was able to produce finer microstructure and significantly reduced the inhomogeneity in distribution of Cr between the poor and the rich Cr areas.

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Section: Microstructure and Phase Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Zhang

Liu

et al. 2021

Preprint

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“…Thus, Priyadarshini et al [11] applied a cryogenic treatment to an AISI P20 steel and obtained a 28% improvement in the wear resistance measured in pin-on disk tests. Also, Park et al [12] utilized a diode laser to modify the surface characteristics of an AISI P20 steel and the block-on-ring tests. They found a decrease in the friction coefficient from 0.5 to 0.33 compared with the untreated steel.…”

Section: Introductionmentioning

confidence: 99%

Milling force model for asymmetric end-mills during high-feed milling on AISI-P20

Russo

Urbicain²,

Egea

et al. 2021

Materials and Manufacturing Processes

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Manufacturing molds for plastic parts injection are a particular machining domain, where challenging materials, like AISI P20 steel, are forced to satisfy the highest surface quality requirements. Before mirror polishing, milling operation is a common and challenging task due to drilling and milling with the same tool. Thus, special cutting tools, like asymmetric indexable type, are often used. This tool presents two geometrically equal positive inserts -one placed horizontally and the other vertically -for the flexible machining of holes, cavities, floors, and walls. Rough-medium milling operations lead to a complicated relationship between cutting conditions and geometrical tool parameters, making it challenging to balance the tool life of both inserts. The novelty of this work is to propose a model for cutting force prediction with an asymmetric tool to explain the separated behavior of both inserts and determine a better compromise between cutting conditions and tool life. The experimental tests were done for model validation and then wear cutting tests for testing improved cutting conditions. The results predicted by the model proved that by changing the depth of cut from 0.3 mm to 0.8 mm, the wear in both inserts was more balanced, increasing chip volume up to 1.7 times.

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“…Generally, this steel is used for mould base, ejector plates; P20 can also use for larger core and cavity blocks which do not need heat treatment such as proto-mould for just few thousand plastic components. The P20 steel can be heat treated to turn it into high hardenability and use it to manufacture core and cavity which expected to produce several million of plastic components [23]. Nylon 6 (PA6 or Polyamides 6) and Nylon 66 (PA66 or Polyamides 66) plastic composites are widely used in Automobile industries.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis and Fabrication of Battery Holder for Two Wheelers

Sabarinathan

Ram

Chethan³

et al. 2020

ARFMTS

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The high-performance plastics usage is increasing in the automobile field because of its advantages over other metals and alloys. Corrosion resistance, light weight, low cost, flexibility in design are the major advantages of plastics above the conventional metallic materials. In this paper a metal version component converted into plastic version in order to increase efficiency, reduce the overall cost of a two-wheeler and to improve the production rate of component. Different types of material such as PP + 15% TALC, PP + 30% GF, PP + 30% TALC, Nylon 6 + 15% GF, Nylon 66 UF, Nylon 6 UF, Nylon 66 + 30% GF, ASA LI941 and ASA LI913 tested for 10,000km road test, vibration test and fitment test. An injection moulding used to produce the component and ‘Mouldx3D’ software was used for mould flow analysis and other simulation. The different parts of injection moulding tool made up of C45, P20 and D2 materials. Among different materials, ASA LI913 was selected since it has better weather resistance than others and the impact strength matched to metal version component. Finally, it was found that the cost of the component made of Plastic considerably less than same component made of metal.

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Influence of laser surface engineering of AISI P20-improved mold steel on wear and corrosion behaviors

Cited by 25 publications

References 27 publications

Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Milling force model for asymmetric end-mills during high-feed milling on AISI-P20

Numerical Analysis and Fabrication of Battery Holder for Two Wheelers

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