NDLI: Optimization of Laser Keyhole Welding Strategies of Dissimilar Metals by FEM Simulation

Content Provider	Springer Nature Link
Author	Garcia Navas, Virginia Leunda, Josu Lambarri, Jon Sanz, Carmen
Copyright Year	2015
Abstract	Laser keyhole welding of dissimilar metals has been simulated to study the effect of welding strategies (laser beam displacements and tilts) and combination of metals to be welded on final quality of the joints. Molten pool geometry and welding penetration have been studied but special attention has been paid to final joint material properties, such as microstructure/phases and hardness, and especially to the residual stress state because it greatly conditions the service life of laser-welded components. For a fixed strategy (laser beam perpendicular to the joint) austenitic to carbon steel laser welding leads to residual stresses at the joint area very similar to those obtained in austenitic to martensitic steel welding, but welding of steel to Inconel 718 results in steeper residual stress gradients and higher area at the joint with detrimental tensile stresses. Therefore, when the difference in thermo-mechanical properties of the metals to be welded is higher, the stress state generated is more detrimental for the service life of the component, and consequently more relevant is the optimization of welding strategy. In laser keyhole welding of austenitic to martensitic stainless steel and austenitic to carbon steel, the optimum welding strategy is displacing the laser beam 1 mm toward the austenitic steel. In the case of austenitic steel to Inconel welding, the optimum welding strategy consists in setting the heat source tilted 45 deg and moved 2 mm toward the austenitic steel.
Starting Page	3140
Ending Page	3156
Page Count	17
File Format	PDF
ISSN	10735623
Journal	Metallurgical and Materials Transactions A
Volume Number	46
Issue Number	7
e-ISSN	15431940
Language	English
Publisher	Springer US
Publisher Date	2015-04-22
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A Numerical Simulation for Dissimilar Aluminum Alloys Joined by Friction Stir Welding

Microstructural Characteristics of a Stainless Steel/Copper Dissimilar Joint Made by Laser Welding

Numerical Simulation of the Inertia Friction Welding Process of Dissimilar Materials

A Quantitative Model of Keyhole Instability Induced Porosity in Laser Welding of Titanium Alloy

Erratum to: A Quantitative Model of Keyhole Instability Induced Porosity in Laser Welding of Titanium Alloy

Laser-Arc Hybrid Welding of Dissimilar Titanium Alloy and Stainless Steel Using Copper Wire

Friction Buttering: A New Technique for Dissimilar Welding

Inertia Friction Welding of Dissimilar Superalloys Mar-M247 and LSHR

Dissimilar Laser Joining of NiTi SMA and MP35N Wires

Optimization of Laser Keyhole Welding Strategies of Dissimilar Metals by FEM Simulation

Similar Documents

A Numerical Simulation for Dissimilar Aluminum Alloys Joined by Friction Stir Welding

Microstructural Characteristics of a Stainless Steel/Copper Dissimilar Joint Made by Laser Welding

Numerical Simulation of the Inertia Friction Welding Process of Dissimilar Materials

A Quantitative Model of Keyhole Instability Induced Porosity in Laser Welding of Titanium Alloy

Erratum to: A Quantitative Model of Keyhole Instability Induced Porosity in Laser Welding of Titanium Alloy

Laser-Arc Hybrid Welding of Dissimilar Titanium Alloy and Stainless Steel Using Copper Wire

Friction Buttering: A New Technique for Dissimilar Welding

Inertia Friction Welding of Dissimilar Superalloys Mar-M247 and LSHR

Dissimilar Laser Joining of NiTi SMA and MP35N Wires

Optimization of Laser Keyhole Welding Strategies of Dissimilar Metals by FEM Simulation