Mechanical properties and fatigue behavior of CO2 laser beam welded armor steel joints
-
Z. Balalan
,
F. Sarsilmaz
Abstract
Armor 500T steel used in armored military vehicles and marine vehicles were joined by CO2 laser beam welding method by applying three welding powers and two welding speeds under shielding argon atmosphere. From microstructure and microhardness results, under low laser welding power and high welding traveling speeds, microstructural transformation in the joining region of the performed welds occurred at a narrower distance as compared to other parameters, and it was determined that four regions formed independent of each other for each parameter group. Furthermore, it was determined that there is a gradual decrease in the microharness values of samples in which welding parameters cause heat input to decrease. The fatigue test results of all samples showed high strength properties in the parameters with high heat input. Additionally, tensile test results for all samples with high heat input parameters also exhibited high strength properties. Fracture at the intersection at high heat input parameters of a relatively ductile separation type occurred in HAZ whereas, at other parameters fracture occurred at the weld center and wide gap semi-brittle fracture behavior was observed. As a consequence, it was found that the most effective parameter as compared with laser welding power is laser welding traveling speed.
© 2020 by Walter de Gruyter Berlin/Boston
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- CONTENTS
- Materials Testing
- FACHBEITRÄGE
- New alloy development from modified cast Ni-base superalloy GTD-111 with additions of Al, Ni and/or Co prepared by vacuum arc melting process
- Enhancing a twist beam suspension system conceptual design using population-based optimization methods
- Influence of alumina whisker or nano-carbon contents on the microstructure and mechanical properties of CuZrTiAlNi refractory high entropy alloy composites
- Mechanical properties and fatigue behavior of CO2 laser beam welded armor steel joints
- Microstructure and properties of a laser cladded NiCrBSi alloy coating
- Dynamic response and damage assessment of spherical robot GFRP spherical shell under low velocity impact
- Influence of temperature on structural-phase changes and physical properties of ceramics on the basis of aluminum oxide and silicon
- Effect of the temperature gradient on hot cracking susceptibility for electron beam welding Alloy 247 LC
- Effect of copper or carbon fiber addition to the 3D printing of polylactid samples
- Theoretical evaluation of abrasive wear behavior of B4C/ FeCrC coating layer evaluated by a Taguchi approach
- Effect of the welding parameters on the surface morphology of resistance spot welded AISI 304 stainless steel joints
- Sine-cosine optimization algorithm for the conceptual design of automobile components
- Design and optimization of an electromechanical actuator for the latch of a foldable vehicle seat
- Design and analysis of a pressure vessel according to EU 2014/29
- BEZUGSQUELLEN
- IMPRESSUM
