ICALEO 2007 Paper #101 (Stress Distributions in Multilayer Laser Deposited Waspaloy Parts using Neutron Diffraction)

Stress Distributions in Multilayer Laser Deposited Waspaloy Parts using Neutron Diffraction
Authors:
Andrew Pinkerton, The University of Manchester; Manchester Great Britain
Richard Moat, The University of Manchester; Manchester Great Britain
Darren Hughes, Institut Laue-Langevin; Grenoble Cedex 9 France
Lin Li, The University of Manchester; Manchester Great Britain
Philip Withers, The University of Manchester; Manchester Great Britain
Michael Preuss, The University of Manchester; Manchester Great Britain
Presented at ICALEO 2007

During layered manufacturing of functional metallic parts by laser direct metal deposition (LDMD) resi...

ICALEO 2007 Paper #1006 (Laser Beam Aluminum-Steel Joints - Mechanical and Dynamical Properties and Detailed Microstructural Analysis of Intermetallic FeAl-Phases)

Laser Beam Aluminum-Steel Joints – Mechanical and Dynamical Properties and Detailed Microstructural Analysis of Intermetallic FeAl-Phases
Authors:
Holger Laukant, Metals and Alloys, University of Bayreuth; Bayreuth Germany
Elisa Guimaraens, Metals and Alloys, University of Bayreuth; Bayreuth Germany
Uwe Glatzel, Metals and Alloys, University of Bayreuth; Bayreuth Germany
Presented at ICALEO 2007

Mixed-materials are important in the automotive industry due to their weight saving potential and good ratio between costs and mass production. Aluminium and steel are difficult to join thermally due to the formation of intermetallic phases and differences in thermal expansio...

ICALEO 2007 Paper #1005 (A Comparison of the Weld Properties Between Laser Welding with and Without Filler Wire of Rolled Mg Sheet for Automobile)

A Comparison of the Weld Properties Between Laser Welding with and Without Filler Wire of Rolled Mg Sheet for Automobile
Authors:
Mok-Young Lee, Rist; Pohang South Korea
Sang-Woon Choi, Posco; Seoul South Korea
Woong-Seong Chang, Rist; Pohang South Korea
Presented at ICALEO 2007

In this study, the welding performance of magnesium alloy was investigated for automobile application. The material was rolled magnesium alloy sheet contains 3wt%Al, 1wt%Zn and Mg balance. The effects of filler wire addition was investigated on 2kW Nd:YAG laser welding. For the results, the mechanical properties of welded specimen were similar with base metal in laser welding with and without f...

ICALEO 2007 Paper #1004 (Laser Penetration Brazing of Brass and Low Carbon Steel)

Laser Penetration Brazing of Brass and Low Carbon Steel
Authors:
Kai Chen, Institute of Laser Engineering, Beijing University of Technology,; Beijing Peoples Republic of China
Rongshi Xiao, Institute of Laser Engineering, Beijing University of Technology, ; Beijing Peoples Republic of China
Youdong Pi, Institute of Laser Engineering, Beijing University of Technology, ; Beijing Peoples Republic of China
Peng Dong, Institute of Laser Engineering, Beijing University of Technology,; Beijing Peoples Republic of China
Wuxiong Yang, Institute of Laser Engineering, Beijing University of Technology, ; Beijing Peoples Republic of China
Presented at ICALEO 2007

ICALEO 2007 Paper #1003 (Laser Brazing of High Strength Steels)

Laser Brazing of High Strength Steels
Authors:
A. Wirth, BIAS; Germany
C. Thomy, BIAS; Hambergen Germany
H. Laukant, University of Bayreuth; Germany
Frank Vollertsen, BIAS; Germany
U. Glatzel, University of Bayreuth; Germany
Presented at ICALEO 2007

The development of high strength steels demands for joining methods for these new materials. As welding may be difficult for some of these new steels due to a detrimental effect of weld metal and HAZ on the mechanical properties of the joint, brazing of these steels could be a better solution. Therefore, in this paper, laser brazing of high-strength steels is regarded. Besides the brazeabil...

ICALEO 2007 Paper #1002 (Nd:YAG Laser Welding of 5083 Aluminum Alloy using Filler Wire)

Nd:YAG Laser Welding of 5083 Aluminum Alloy using Filler Wire
Authors:
Antti Salminen, Lappeenranta University of T; Lappeenranta 85 Finland
Stefan Grunenwald, Lappeenranta University of T; Lappeenranta 85 Finland
Veli Kujanp Lappeenranta University of Technology; Lappeenranta Finland
Presented at ICALEO 2007

High reflectivity and high thermal conductivity, high vapour pressure of alloying elements as well as low liquid surface tension and low ionisation potential, make laser welding of aluminium and its alloys a demanding task. Problems that occur during welding are mainly
process instabilities of the keyhole and the melt pool, increased plasma formation above the...

ICALEO 2007 Paper #1001 (Technology Development on Dual Beam Laser Lap Welding of Mg Casting Alloys for Automotive Applications)

Technology Development on Dual Beam Laser Lap Welding of Mg Casting Alloys for Automotive Applications
Authors:
Feng Lu, Chrysler LLC; Auburn Hills MI USA
Mariana Forrest, Chrysler LLC; Auburn Hills MI USA
Steve Logan, Chrysler LLC; Auburn Hills MI USA
Presented at ICALEO 2007

Magnesium casting alloys are very appealing materials for automotive applications due to their excellent specific strength (weight reduction), sound damping capability, castability, electromagnetic interference shielding ability and etc. Laser welding is also the desired method of joining these materials, which provides high productivity and structural integrity. However, there is a major chall...

ICALEO 2006 Paper #P549 (The Influence of the Cooling Rate on Structure of Laser Boronizing Layer on Nodular Iron)

The Influence of the Cooling Rate on Structure of Laser Boronizing Layer on Nodular Iron
Authors:
Marta Paczkowska, Poznan University of Technology, Institute of Working Machines and Motor Vehicle; Poznan Poland
Wlodzimierz Waligora, Poznan University of Technology; Poznan Poland
Presented at ICALEO 2006

This article refers to laser alloying surface modifications. In presented research nodular iron laser boronizing effects were studied. The cooling rate effect on melted zone was particularly investigated. Different cooling rates were achieved by using appropriate combination of laser treatment parameters: laser beam interaction time and laser beam power. 5 laser beam velocities wit...

ICALEO 2006 Paper #P544 (Laser Cutting of Natural Stone Slabs)

Laser Cutting of Natural Stone Slabs
Authors:
Antonio Riveiro, Universidade de Vigo; Vigo Spain
Mohamed Boutinguiza, Universidade de Vigo; Vigo Spain
Ramón Soto, Univerisdade de Vigo; Vigo Spain
Félix Quintero, Universidade de Vigo; Vigo Spain
Fernando Lusquiños, Universidade de Vigo; Vigo Spain
Juan Pou, Universidade de Vigo; Vigo Spain
Mariano Pérez-Amor, Universidade de Vigo; Vigo Spain
Presented at ICALEO 2006

Granite is a crystalline natural stone, which is considered to be one of the best materials in all type of constructions, due to its durability, easy maintenance and aesthetic. There are different var...

ICALEO 2006 Paper #P539 (Fabrication of Fe-Based Bulk Metallic Glass Components Using Laser Additive Manufacturing)

Fabrication of Fe-Based Bulk Metallic Glass Components Using Laser Additive Manufacturing
Authors:
Shawn Kelly, ARL, The Penn State University; State College PA USA
Presented at ICALEO 2006

One of the current limitations in producing bulk metallic glass components of sufficient scale for structural application is the low critical casting thickness available with current amorphous alloy systems. Currently, iron-based glass forming alloys (Fe48Cr15Mo14Y2C15B6) can be cast into fully amorphous ingots approximately 12mm in diameter. With laser additive manufacturing, material and heat are added incrementally, theoretically leading to the fabrication of much larger amorphous structures than curren...