Work

Microstructure and wear resistance of high-carbon pearlitic CrMo wear-resistant cast steels containing submicron-sized precipitates

Year: 2024

Type: article

Abstract: Vanadium (V) plays a crucial role in the formation of precipitates. In this study, different amounts of submicron-sized precipitates were introduced in high-carbon pearlitic CrMo wear-resistant cast steel by the addition of V. The result shows that the microstructure of high-carbon CrMo wear-resistant cast steel consists of lamellar pearlite and submicron-sized precipitates. With higher V content, the density of submicron-sized precipitates increases. The wear resistance of the steel also enhances with the addition of V, which is primarily attributed to the formation of submicron-sized precipitates resulting in the enhancement of initial mechanical properties and the creation of a harder work-hardening layer in worn surface. The wear mechanisms involve microploughing, microcutting, microfatigue, and microcracking in high-carbon pearlitic CrMo wear-resistant cast steel, but the introduction of submicron-sized precipitates leads to a substantial reduction in the depth of microploughing and microcutting.

Source: Journal of Materials Research and Technology

DOI: 10.1016/j.jmrt.2024.12.208

Authors: Long Zhao, Haining Liu, Yu Song, Ganchao Zhai, Xiangru Chen, Qijie Zhai

Institution: Shanghai University

Language: English

Topic: Metal Alloys Wear and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,430

Funder: National Natural Science Foundation of China