Naslov
Structure and properties of welded joint of high- strength wear-resistant steel NM360

Autori
Gao, Zeng ; Chen, Z.R. ; Wu, Y. H. ; Niu, Jitai ; Brnić, Josip

Izvornik
Materials science and technology (0267-0836) 32 (2016), 4; 299-302

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Wear-resistant steel ; Welded joint ; Structure ; Properties
(Wear-resistant stee ; Welded joint ; Structure ; Properties)

Sažetak
Present research studies the structure and properties of welded joint of high-strength wear-resistant steel NM360 by means of carbon dioxide arc welding with welding material GFM- 70. The experimental result indicates that high-strength wear-resistant steel NM360 can be welded together with appropriate welding parameters. In the whole joint area, macroscopic defect such as pore, inclusion, and crack does not appear. The joint tensile strength exceeds that of welding material GFM- 70 at least 10.5%. The impact energy in each part of joint doubles that of base metal. Between the joint and base metal, there is coarse grain zone, fully recrystallized zone, incompletely recrystallized zone. The hardness in heat affected zone and near fusion line is quite large, which distributes in the range of 360~394 HV. The hardness of other area in joint is smaller than that of base metal NM360.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA