• PICALO 2008 Paper #609 (Microstructure and Corrosion Behavior of Laser Welds Between Dissimilar Stainless Steels)

    Microstructure and Corrosion Behavior of Laser Welds Between Dissimilar Stainless Steels
    Authors:
    Chi Tat Kwok, University of Macau; Taipa Macau Peoples Republic of China
    S.L. Fong, University of Macau; Taipa, Macau Peoples Republic of China
    F.T. Cheng, The Hong Kong Polytechnic University; Hung Hom, Kowloon Hong Kong
    H.C. Man, The Hong Kong Polytechnic University; Hung Hom, Kowloon Hong Kong
    Presented at PICALO 2008

    In recent years, laser beam welding becomes very popular in joining dissimilar materials for improving performance and reducing cost of the engineering components because of its accuracy, precision, repeatability and low distortion. In the ...

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  • PICALO 2008 Paper #701 (Studies on the Effect of Welding Current in Laser-Plasma Arc Hybrid Welding of an Al-Li Alloy)

    Studies on the Effect of Welding Current in Laser-Plasma Arc Hybrid Welding of an Al-Li Alloy
    Authors:
    Baohua Chang, Tsinghua University; Beijing Peoples Republic of China
    Jing Zhou, Tsinghua University; Beijing Peoples Republic of China
    Zhining Li, Tsinghua University; Beijing Peoples Republic of China
    Dong Du, Tsinghua University; Beijing Peoples Republic of China
    Presented at PICALO 2008

    Laser-plasma arc hybrid welding has high intensity heat source, high welding speed and good gap-bridging capability, and it is a promising technology in production of thin-walled structure of aluminum alloy in aerospace industry. This paper aims to solve the weld poros...

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  • PICALO 2008 Paper #702 (Comparison of Weldability in Nd:Yag-Gmaw Hybrid Welding of Sus316L and Xm-19 Stainless Steels)

    Comparison of Weldability in Nd:Yag-Gmaw Hybrid Welding of Sus316L and Xm-19 Stainless Steels
    Authors:
    Xudong Zhang, Hitachi Ltd., Materials Research Lab.; Hitachi-Shi, Ibaraki-Ken Japan
    Eiji Ashida, Hitachi Ltd., Materials Research Lab.; Hitachi-Shi, Ibaraki-Ken Japan
    Xiangjun Luo, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
    Noriaki Gotou, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
    Presented at PICALO 2008

    Laser-arc hybrid welding is prospectively considered as a high-efficiency and high-quality welding method for medium and thick section steels. SUS316L and XM-19 stainless steels are widely used in components and ...

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  • PICALO 2008 Paper #704 (Spot Joining of Magnesium using Laser Assisted Self-Pierce Riveting Technology)

    Spot Joining of Magnesium using Laser Assisted Self-Pierce Riveting Technology
    Authors:
    Wei (William) Song, Cast Cooperative Research Centre, Swinburne University of Technology; Hawthorn Australia
    Yvonne Durandet, Cast Cooperative Research Centre, Swinburne University of Technology; Hawthorn Australia
    Brian Dempster, Cast Cooperative Research Centre, Swinburne University of Technology; Hawthorn Australia
    Milan Brandt, Cast Cooperative Research Centre, Swinburne University of Technology; Hawthorn Australia
    Stuart Blacket, Henrob (Uk) Pty Ltd; Geebung Australia
    Presented at PICALO 2008

    Spot joining of aluminium intensive vehicle bodies using sel...

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  • PICALO 2008 Paper #705 (Enhancement of Laser Welding Capabilities by Hybridization or Combination of Different Processes)

    Enhancement of Laser Welding Capabilities by Hybridization or Combination of Different Processes
    Authors:
    Dirk Petring, Fraunhofer ILT; Aachen Germany
    Presented at PICALO 2008

    The laser welding process is the most flexible fusion welding process industrially available. This is mainly due to the excellent variability of lasers spatial and temporal power distribution down to very small geometries and time scales. The result is high flexibility regarding e.g. weldable materials, achievable penetration depths and possible seam and joint configurations and thereby a big potential for application-specific process optimization. The degree of freedom for optimization is further enhanced and process ...

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  • PICALO 2008 Paper #706 (A Comparison of the Pitting Corrosion Behavior of 304L Stainless Steel by Tig, Laser and Laser-Tig Hybrid Welding)

    A Comparison of the Pitting Corrosion Behavior of 304L Stainless Steel by Tig, Laser and Laser-Tig Hybrid Welding
    Authors:
    Jun Yan, Huazhong University of Science and Technology,; Wuhan Peoples Republic of China
    Ming Gao, Huazhong University of Science and Technology,; Wuhan Peoples Republic of China
    Xiaoyan Zeng, Huazhong University of Science and Technology; Wuhan Peoples Republic of China
    Presented at PICALO 2008

    Laser-TIG hybrid welding is a technique which develops very rapidly in recent ten years. There have been a lot of reports about the laser-TIG hybrid welding technique and the quality controlling of the welding beads. However, there seems few reports about...

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  • PICALO 2008 Paper #707 (Guidance and Stabilisation of Electric Arc Welding using Nd:Yag Laser Radiation)

    Guidance and Stabilisation of Electric Arc Welding using Nd:Yag Laser Radiation
    Authors:
    Christian Stahlhut, Laser Zentrum Hannover ; Hannover Germany
    Jörg Hermsdorf, Laser Zentrum Hannover e.V:; Hannover Germany
    Rainer Kling, Laser Zentrum Hannover ; Hannover Germany
    Alexander Barroi, Laser Zentrum Hannover E.V.; Hannover Germany
    Frank Otte, Laser Zentrum Hannover E. V. ; Hannover Germany
    Presented at PICALO 2008

    The trend in production industry to lightweight construction using aluminium and high and higher strength steels calls for faster, yet stable production processes. To realise these requirements, we have developed a gas metal arc wel...

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  • PICALO 2008 Paper #708 (Study on Welding Characteristics of Combining Laser Welding and Resistance Seam Welding Joined Ti6Al4V Alloy Lap Joints)

    Study on Welding Characteristics of Combining Laser Welding and Resistance Seam Welding Joined Ti6Al4V Alloy Lap Joints
    Authors:
    Xinge Zhang, Harbin Institute of Technology; Harbin Peoples Republic of China
    Liqun Li, Harbin Institute of Technology,; Harbin Peoples Republic of China
    Zhenglong Lei, Harbin Institute of Technology; Harbin Peoples Republic of China
    Yanbin Chen, Harbin Institute of Technology; Harbin Peoples Republic of China
    Presented at PICALO 2008

    With deep penetration laser welding of lap joint and tee-joint, porosity is apt to occur and melting width at lap interface is too narrow to support high shear load; on the other hand, the process n...

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  • PICALO 2008 Paper #802 (Therotical and Experimental Research on Temperature Field of Coaxial Powder Flow in Laser Cladding)

    Therotical and Experimental Research on Temperature Field of Coaxial Powder Flow in Laser Cladding
    Authors:
    Xichen Yang, Laser Processing Center,Tianjin Polytechnic University; Tianjin Peoples Republic of China
    Zhe Dong, Tianjin Polytechnic University; Tianjin Peoples Republic of China
    Li Li, Tianjin Polytechnic University; Tianjin Peoples Republic of China
    Presented at PICALO 2008

    Threr are three phsical processing of heat transfer,mass trasfer and convection in coaxial powder flow. Temperature field of coaxial powder
    is important for laser manufacturing.Computer simulation of temperature field has been made from two phases flow of powder/gas.Experimental measuremet ...

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  • PICALO 2008 Paper #805 (Heat Transfer and Fluid Flow during Double-track Laser Cladding of H13 Tool Steel (Invited Paper))

    Heat Transfer and Fluid Flow during Double-track Laser Cladding of H13 Tool Steel (Invited Paper)
    Authors:
    Jyoti Mazumder, University of Michigan ; Ann Arbor MI USA
    Xiuli He, University of Michigan; Ann Arbor MI USA
    Presented at PICALO 2008

    Laser cladding based Direct Metal Deposition (DMD) has received significant attention due to its diversified potential for material processing, such as innovative alloying, metallic coating, rapid prototyping and components repairing. Numerical simulation not only helps to understand the complex physical phenomena and the underlying theory involved in this process, it can also be used in the process prediction and system control. The evolution ...

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