Effect of re-melted textured patterns on the mechanical and tribological behavior of 70Mn steel

verfasst von

Yazhe Chen, Qingyu Shang, Youwei Zhang, Ying Yao, Adesh Kumar Tomar, Risheng Long, Max Marian

Abstract

Purpose: This study aims to investigate the mechanical and tribological behavior of 70Mn steel with different laser re-melted textured patterns. Design/methodology/approach: Laser surface re-melting (LSR) was used to manufacture various textured patterns (i.e. line, grid and mixed) on both the original and heat-treated 70Mn steel plates. The micro-hardness, microstructure, tensile strength, yield strength, elongation, coefficients of friction (COF) and worn morphologies were characterized to evaluate the impact of different textured patterns on the overall performance. Findings: The results show that re-melted unit exhibited the highest surface hardness on the subsurface. The increase in surface hardness of the re-melted unit for the heat-treated 70Mn steel samples was much lower than that of the original ones. The re-melted textured patterns did not improve the tensile strength, yield strength and elongation of either original or heat-treated 70Mn steel samples. The re-melted textured patterns effectively reduced the average COFs of heat-treated 70Mn steel samples, but increased friction of the non-heat-treated samples. Originality/value: This study provides valuable insights into enhancing the mechanical properties and tribological characteristics of 70Mn steel, particularly in the automotive, heavy machinery and high-load application sectors. These industries have stringent requirements for durability and friction control, and the findings of this research are expected to effectively extend the lifespan of mechanical components. Peer review: The peer review history for this article is available at: publons.com/publon/10.1108/ILT-11-2024-0443/

Organisationseinheit(en)

Institut für Maschinenkonstruktion und Tribologie

Externe Organisation(en)

Northeastern University China
Shenyang University of Chemical Technology (SUCT)
Pontificia Universidad Católica de Chile

Typ

Artikel

Journal

Industrial Lubrication and Tribology

Band

77

Seiten

605-615

Anzahl der Seiten

11

ISSN

0036-8792

Publikationsdatum

27.02.2025

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Maschinenbau, Allgemeine Energie, Oberflächen, Beschichtungen und Folien

Elektronische Version(en)

https://doi.org/10.1108/ILT-11-2024-0443 (Zugang: Geschlossen)