Improvement Efficiency of Laser Strengthening of Iron Details Ship�s Power Plants

Kuleshov, Igor I.; Khodakovskiy, V. M.

doi:10.21821/2309-5180-2017-9-4-814-828

Vestnik GUMRF imeni admirala S. O. Makarova

2017

DOI: 10.21821/2309-5180-2017-9-4-814-828

|View full text |Cite

Improvement Efficiency of Laser Strengthening of Iron Details Ship�s Power Plants

Igor I. Kuleshov¹,

V. M. Khodakovskiy²

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2023

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Structure and wear characteristics of cast iron after laser surface modification

Yares’ko,

Guseva,

Shcherbakov

et al. 2023

Izv. vysš. učebn. zaved., Čern. metall.

View full text Add to dashboard Cite

The paper presents the results of studies of macro- and microstructure of alloyed chromium-vanadium cast iron after laser treatment (LT) in air using a continuous laser source with a variation in its power from 60 to 100 W and scanning speed of the laser beam varying from 5 to 17 mm/s. Metallography and durometry methods were used to determine composition and structure of the laser exposure zones (LEZ). It is shown that LT with a slight melting of the surface leads to a significant increase in microhardness in LEZ. In this case, martensite is the main structure in the near-surface layer of LEZ in the melting zone, and ledeburite structure prevails in the quenching zone. For the studied LT modes, LEZ depth is 220 – 310 μm. At the same time, microhardness is more than 2.5 – 4.2 times higher than microhardness of the base metal and reaches 820 HV0.1, that is a significant factor in increasing the wear resistance of the material. On the contrary, no significant structural changes were found in the case of LT without melting the surface. In order to identify the role of LT in wear of cast iron, sliding friction tests were carried out according to the “disk – finger” scheme at a pressure in the contact zone of 12.5 MPa and indenter rotation speed of 580 rpm. According to the test data, a significant decrease in linear wear and the wear intensity after the surface melting was found. The wear intensity is reduced by more than 100 times, and linear wear – by more than 50 times. The characteristics of LEZ surface cause a decrease in the friction coefficient by 30 % relative to the untreated surface.

show abstract

Structure and wear characteristics of cast iron after laser surface modification

Yares’ko,

Guseva,

Shcherbakov

et al. 2023

Izv. vysš. učebn. zaved., Čern. metall.

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Improvement Efficiency of Laser Strengthening of Iron Details Ship�s Power Plants

Cited by 1 publication

References 0 publications

Structure and wear characteristics of cast iron after laser surface modification

Structure and wear characteristics of cast iron after laser surface modification

Contact Info

Product

Resources

About