PICALO 2008 Paper #202 (Colour Marking of Metals with Fibre Lasers)

Colour Marking of Metals with Fibre Lasers
Authors:
Anthony Tse, A & P Instrument Co. Ltd; Kowloon Bay Hk Hong Kong
Lu Ming, Spi Lasers; Southampton Great Britain
Tony Hoult, Spi Lasers Llc; Santa Clara CA USA
Presented at PICALO 2008

Laser marking has become a standard industrial process. Recent refinements in laser source technology have enabled the development of colour marking of metals such as stainless steel. The high level of control of the localised heating required in the material can be achieved with a pulsed 20W laser capable of operating in the 20-500kHz range. The flexibility offered by the laser in terms of pulse shape, length and power enables an extensi...

PICALO 2008 Paper #201 (A New Method of Laser Beam Induced Surface Modification using the Surfi-Sculpt Process (Invited Paper))

PICALO 2008 Paper #1208 (Residual Stress Distribution in Laser Alloying Zone with Fecsib Powder)

Residual Stress Distribution in Laser Alloying Zone with Fecsib Powder
Authors:
Haiyan Zhao, Department of Mechanical Engineering, Tsinghua University ; Beijing Peoples Republic of China
Zhengyang Li, Department of Mechanical Engineering, Tsinghua University; Beijing Peoples Republic of China
Bin Zhang, Department of Mechanical Engineering, Tsinghua University; Beijing Peoples Republic of China
Minlin Zhong, Department of Mechanical Engineering, Tsinghua University; Beijng Peoples Republic of China
Yu Gu, Department of Mechanical Engineering, Tsinghua University; Beijing Peoples Republic of China
Qiulin Wu, Beijing Beiye Functional Materials Co.Lt...

PICALO 2008 Paper #1207 (Laser Melt Injection of Monocrystalline WC Particles into Ti-6Al-4V)

Laser Melt Injection of Monocrystalline WC Particles into Ti-6Al-4V
Authors:
Dejian Liu, Harbin Institute of Technology; Harbin Peoples Republic of China
Fuquan Li, Harbin Institute of Technology; Harbin Peoples Republic of China
Liqun Li, Harbin Institute of Technology; Harbin Peoples Republic of China
Yanbin Chen, Harbin Institute of Technology; Harbin Peoples Republic of China
Presented at PICALO 2008

The laser melt injection (LMI) process was explored to produce WC particles (WCp) reinforced Ti-6Al-4V metal matrix composites (MMCs). In particular the high strength monocrystalline WC particles was used as injection particles to avoid the intercrysta...

PICALO 2008 Paper #1205 (Metal Matrix Nano H-Bn Self-Lubricating Composite Coating Synthesized by Nd:Yag Laser Cladding)

Metal Matrix Nano H-Bn Self-Lubricating Composite Coating Synthesized by Nd:Yag Laser Cladding
Authors:
A.H. Wang, Huazhong University of Science and Technology; Wuhan Peoples Republic of China
X.L. Zhang, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
X.F. Zhang, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
X.W. Xiong, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
H.G. Xu, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China
C.S Xie, Huazhong University of Science and Technology ; Wuhan Peoples Republic of China<...

PICALO 2008 Paper #1204 (Mechanism Analysis on Dry-Friction Abrasive Wear Resistance of Particulate Reinforced Mmc Coatings by Laser Deposition for Corrugated Rollers)

Mechanism Analysis on Dry-Friction Abrasive Wear Resistance of Particulate Reinforced Mmc Coatings by Laser Deposition for Corrugated Rollers
Authors:
Zhaoyong Qian, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
Wenjin Liu, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Mingxing Ma, Tsinghua University; Beijing Peoples Republic of China
Chaofeng Wu, Tsinghua University; Beijing Peoples Republic of China
Dongye Zhang, Tsinghua University; Beijing Peoples Republic of China
Presented at PICALO 2...

PICALO 2008 Paper #1203 (Recent Developments of the Laser-Assisted Cold Spray Process and Deposit Characterisation)

Recent Developments of the Laser-Assisted Cold Spray Process and Deposit Characterisation
Authors:
Matthew Bray, University of Cambridge; Cambridge Great Britain
Andrew Cockburn, University of Cambridge; Cambridge Great Britain
William O'Neill, University of Cambridge; Cambridge Great Britain
Presented at PICALO 2008

Laser-assisted Cold Spray (LCS) is a new coating and fabrication process which combines the supersonic powder beam found in Cold Spray (CS) with laser heating of the deposition zone. LCS retains the advantages of CS; solid-state deposition, high build rate and the ability to deposit onto a range of substrates, while reducing operating costs by removing th...

PICALO 2008 Paper #1201 (Improving Physical Properties of Functional Materials by Laser Irradiation (Invited Paper))

Improving Physical Properties of Functional Materials by Laser Irradiation (Invited Paper)
Authors:
Yijian Jiang, Institiute of Laser Engineering, Beijing University of Technology; Beijing Peoples Republic of China
Lingfei Ji, Beijing University of Technology ; Beijing Peoples Republic of China
Presented at PICALO 2008

In this presentation, progress on improving physical properties of functional materials by laser irradiation is reported and discussed. After laser irradiation, some physical properties, such as dielectric, electrical conductivity, piezoelectric, magnetic, transparency, and photoluminescence properties, can be found to be enhanced in some crystals, ceramics, or thin...

PICALO 2008 Paper #1108 (Laser Peening of 7050 Aluminum Alloy with Fastener Holes)

Laser Peening of 7050 Aluminum Alloy with Fastener Holes
Authors:
Zou Shikun, BAMTRI; Beijing Peoples Republic of China
Ziwen Cao, Beijing Aeronautical Manufacturing Technology Research Institute ; Beijing Peoples Republic of China
Shuili Gong, Beijing Aeronautical Manufacturing Technology Research Institute ; Beijing Peoples Republic of China
Presented at PICALO 2008

In order to develop the application of laser shock processing (LSP) as a strengthening technology for 7050 aluminum alloy fasten holes, the fatigue properties of laser shock-processed aluminum alloy specimens were investigated. At first, we characterized and compared the dislocation density and surface r...

PICALO 2008 Paper #1107 (The Study on the Laser Compound Forming of Sheet Metal)

The Study on the Laser Compound Forming of Sheet Metal
Authors:
Jianzhong Zhou, Jiangsu University; Zhenjiang Peoples Republic of China
YiBin Chen, Jiangsu University; Zhenjiang Peoples Republic of China
Shu Huang, Jiangsu University ; Zhenjiang Peoples Republic of China
Li Xiao, Jiangsu University ; Zhenjiang Peoples Republic of China
Yueqing Sun, Jiangsu University ; Zhenjiang Peoples Republic of China
Presented at PICALO 2008

Laser compound formingLCF of sheet metal is an advanced forming process without dies and other external forces. It combines the advantages of the laser thermal-stress forming (LTF) and laser peen forming (LPF). T...