EFFECT OF MULTI-LAYER LASER HEATING ON THE MICROSTRUCTURE AND MICROHARDNESS OF LASER HOT-WIRE DEPOSITED FV520B STEEL

Wei, Shaopeng1; Wang, Gang1; Huang, Zilin2; Wen, Peng3; Rong, Yiming4,5

10.1115/MSEC2016-8580

2016

PROCEEDINGS OF THE ASME 11TH INTERNATIONAL MANUFACTURING SCIENCE AND ENGINEERING CONFERENCE, 2016, VOL 2

2

Blacksburg, VA, United states

THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA

AMER SOC MECHANICAL ENGINEERS

The mechanical and microstructural properties of FV520B martensitic stainless steel fabricated by laser hot-wire deposition are presented. An investigation based on experimental method was conducted to analyze the development of microstructure and microhardness under multiple laser heating. Multiple layers were cladded on the surface of martensitic stainless steel FV520B by fiber laser. A defect-free and high forming quality coatings were obtained. The microstructure of clad layer and heat affected zone was characterized using an optical microscope, SEM and EBSD. The gradient microhardness from the cladding layer to the substrate was tested. Subsequently, the effect of thermal history under multi-layer laser heating on the microstructure and microhardness was analyzed. Results indicate that the hardening trend in the coating/substrate interface and softening trend in the heat affected zone under laser heating. The tempering effect of the following-layer laser heating facilitates the re precipitation of the hardening phases in heat affected zone.

Laser hot-wire deposition Microstructure characterization Microhardness profile Multi-layer Precipitation hardening

其他

英语

EI ; CPCI-S

Engineering ; Materials Science

Engineering, Biomedical ; Engineering, Manufacturing ; Engineering, Mechanical ; Materials Science, Multidisciplinary

WOS:000388159400002

20164302939816

Age hardening ; Coatings ; Corrosion ; Deposition ; Fiber lasers ; Hardening ; Heat affected zone ; Heating ; Microhardness ; Microstructure ; Steel fibers ; Wire

Metal Forming:535.2 ; Heat Treatment Processes:537.1 ; Welding:538.2 ; Steel:545.3 ; Solid State Lasers:744.4 ; Chemical Operations:802.3 ; Coating Materials:813.2 ; Fiber Products:819.4 ; Materials Science:951

Web of Science

1.Tsinghua Univ, Beijing Key Lab Precis Ultraprecis Mfg Equipments, Beijing, Peoples R China
2.Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing, Peoples R China
3.Tsinghua Univ, Dept Mech Engn, Beijing, Peoples R China
4.South Univ Sci & Technol China, Mech & Energy Engn Dept, Shenzhen, Peoples R China
5.Tsinghua Univ, Beijing, Peoples R China

Wei, Shaopeng,Wang, Gang,Huang, Zilin,et al. EFFECT OF MULTI-LAYER LASER HEATING ON THE MICROSTRUCTURE AND MICROHARDNESS OF LASER HOT-WIRE DEPOSITED FV520B STEEL[C]. THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA:AMER SOC MECHANICAL ENGINEERS,2016.