Mechanical and tribological behavior of dual-phase ductile iron with different martensite amounts

• DOI: 10.1016/j.jmrt.2023.03.210
• Publication Date: 2023-04-01T06:10:24Z
• Authors: Chen Liu; Yuzhou Du; Xin Wang; Zhitao Hu; Pengchun Li; Ke Wang; Dongjie Liu; Bailing Jiang
• Keywords: Ductile iron; Ductility (Earth science); Brittleness; Dual-phase steel

Ferrite-martensite (F/M) dual-phase ductile iron with different relative amounts of martensite was fabricated via intercritical quenching in the present study. The mechanical properties and tribological behavior were investigated. strength increased linearly increase level, while ductility decreased rapidly. Fracture surface morphology analysis indicated that fracture predominant when proportion less than 20%. However, samples more 40% exhibited brittle fractures. Wear tests F/M a significantly lower friction coefficient compared directly quenched iron. Additionally, affected significantly. Abrasive wear small martensite, delamination main mechanism case high martensite.