Microstructural Characteristics and Properties of Laser-Welded Diamond Saw Blade with 30CrMo Steel
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-04-17 |
| Journal | Materials |
| Authors | Q. Xu, C.āF. Shu, Yibo Liu, Shengzhong Kou, Rui Cao |
| Institutions | Lanzhou University of Technology, Shantou University |
| Analysis | Full AI Review Included |
ERROR: File too large (34.9MB)
View Original Abstract
In order to enhance the quality of diamond composite materials, this work employs a Cu-Co-Fe and Ni-Cr-Cu pre-alloyed powder mixture as a transition layer, and utilizes laser-welding technology for saw blade fabrication. By adjusting the laser-welding process parameters, including welding speed and welding power, well-formed welded joints were achieved, and the microstructure and mechanical properties of the welded joints were investigated. The results demonstrate that the best welding performance was achieved at a laser power of 1600 W and a welding speed of 1400 mm/min, with a remarkable tooth engagement strength of up to 819 MPa. The fusion zone can be divided into rich Cu phase and rich Fe phase regions, characterized by coarse grains without apparent preferred orientation. The microstructure of the heat-affected zone primarily consists of high-hardness brittle quenched needle-like martensite, exhibiting a sharp increase in microhardness up to 550 HV. Fracture occurred at the boundary between the fusion zone and the heat-affected zone of the base material, where stress concentration was observed. By adjusting the welding parameters and transition layer materials, the mechanical properties of the joints were improved, thereby achieving a reliable connection between diamond composite materials and the metal substrate.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2023 - Dias, Nanoindentation test of a DLC coated high-speed steel substrate using a two-dimensional axisymmetric finite element method [Crossref]
- 2023 - Micro-welding of sapphire and metal by femtosecond laser [Crossref]
- 2022 - Development and properties evaluation of diamond-containing metal composites for fused filament fabrica-tion of diamond tool [Crossref]
- 2017 - Microwave sintering behavior of FeCuCo based metallic powder for diamond alloy tool bit [Crossref]
- 2023 - High-strength and wear-resistant Co-Cr-Mo/diamond composites fabricated by selective laser melting [Crossref]
- 2020 - The role of pre-alloyed powder combined with pressure-less microwave sintering on performance of super-hard materials [Crossref]
- 2018 - Fabrication of Fe-Cu matrix diamond composite by microwave hot pressing sintering [Crossref]
- 2009 - The brazing of diamond [Crossref]
- 2013 - Sintered diamond tools: Trends, challenges and prospects [Crossref]