Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2013-08-24

Journal: Applied Mechanics and Materials

Included Journals: Scopus、SCIE、CPCI-S、EI

Volume: 423-426

Page Number: 276-280

ISSN: 9783037858882

Key Words: High current pulsed electron beam; 40CrNiMo7 steel; Microstructure; Microhardness; Wear resistance

Abstract: High current pulsed electron beam (HCPEB) treatment was conducted on 40CrNiMo7 steel. The surface microstructure was characterized by metalloscopy and X-ray diffraction methods. The microhardness and wear resistance of modified surface were measured. After the HCPEB treatment, the surface crater structure was observed due to the inhomogeneity of initial material. A modified layer of depth similar to 7 mu m was formed with a hybrid microstructure composed mainly of martensite and a small quantity of austenite. The surface microhardness of HCPEB modified sample was increased drastically to more than 1000 HK. The wear resistance increased by about 36% as compared to the initial state.