The effect of porosity on the mechanical property of metal-bonded diamond grinding wheel fabricated by selective laser melting (SLM)

Tian, Chenchen1,2; Li, Xuekun1,2,3; Li, Hanyang4; Guo, Guoqiang5; Wang, Liping1,2,3; Rong, Yiming4

2019-01-16

10.1016/j.msea.2018.11.138

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING   影响因子和分区

0921-5093

1873-4936

Selective laser melting (SLM) technology is applied to fabricate grinding wheel with high porosity and controllable porous structure. Octahedron cellular structures with porosities ranging from 0.3 to 0.7 and AlSi10Mg/diamond composite are fabricated and investigated in terms of morphological properties and mechanical properties. Characterizations of cellular structure, grain-bond interface and practical porosity are performed. Compression test and three-point bending test are carried out to study the effect of porosity on mechanical property of grinding wheel. The results show that metallurgical bonding forms at the grain-bond interface for the SLM-fabricated composite. The compressive characteristics conform to the classic Gibson-Ashby model for stretch-dominated cellular structure and have positive correlation and linear relationship with relative density. Flexural strength is linear with relative density while flexural modulus is non-linear with relative density. The specimen shape changes from cube to prism, barrel or cuboid during compression test corresponding to three different failure modes. The initial crack always generates in the middle region of specimen and propagates from bottom to top till absolute fracture during three-point bending test. The deformation behavior of SLM-fabricated porous composite resembles to brittle material.

Porosity Grinding wheel Metal bond Selective laser melting Mechanical property

SCI ; EI

英语

其他

Shanghai Rising-Star Program[16QB1400900]

Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000456891500078

ELSEVIER SCIENCE SA

20184906212166

3D printers ; Cellular automata ; Compression testing ; Diamond cutting tools ; Grinding (machining) ; Grinding wheels ; Mechanical properties ; Melting ; Porosity ; Structural properties ; Wheels

Structural Design:408 ; Machine Components:601.2 ; Machining Operations:604.2 ; Computer Software, Data Handling and Applications:723 ; Printing Equipment:745.1.1 ; Chemical Operations:802.3 ; Mathematics:921 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China
2.Tsinghua Univ, Beijing Key Lab Precis Ultraprecis Mfg Equipment, Beijing 100084, Peoples R China
3.Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China
4.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
5.Shanghai Spaceflight Precis Machinery Inst, Shanghai 201600, Peoples R China

Tian, Chenchen,Li, Xuekun,Li, Hanyang,et al. The effect of porosity on the mechanical property of metal-bonded diamond grinding wheel fabricated by selective laser melting (SLM)[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:697-706.

Tian, Chenchen,Li, Xuekun,Li, Hanyang,Guo, Guoqiang,Wang, Liping,&Rong, Yiming.(2019).The effect of porosity on the mechanical property of metal-bonded diamond grinding wheel fabricated by selective laser melting (SLM).MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,697-706.

Tian, Chenchen,et al."The effect of porosity on the mechanical property of metal-bonded diamond grinding wheel fabricated by selective laser melting (SLM)".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):697-706.