Effect of pulsed metal inert gas (pulsed-MIG) and cold metal transfer (CMT) techniques on hydrogen dissolution in wire arc additive manufacturing (WAAM) of aluminium

2020 ◽  
Vol 107 (1-2) ◽  
pp. 311-331 ◽  
Author(s):  
Karan S. Derekar ◽  
Adrian Addison ◽  
Sameehan S. Joshi ◽  
Xiang Zhang ◽  
Jonathan Lawrence ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Metal Transfer ◽  
Inert Gas ◽  
Cold Metal Transfer ◽  
Cold Metal ◽  
Wire Arc Additive Manufacturing ◽  
Hydrogen Dissolution

scholarly journals Thermo-mechanical simulation of overlaid layers made with wire + arc additive manufacturing and GMAW-cold metal transfer

2020 ◽  
Vol 64 (8) ◽  
pp. 1427-1435 ◽  
Author(s):  
C. Cambon ◽  
S. Rouquette ◽  
I. Bendaoud ◽  
C. Bordreuil ◽  
R. Wimpory ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Metal Transfer ◽  
Cold Metal Transfer ◽  
Mechanical Simulation ◽  
Cold Metal ◽  
Wire Arc Additive Manufacturing

scholarly journals Process response of Inconel 718 to wire + arc additive manufacturing with cold metal transfer

2020 ◽  
Vol 195 ◽  
pp. 109031
Author(s):  
Renan Medeiros Kindermann ◽  
M.J. Roy ◽  
R. Morana ◽  
Philip B. Prangnell
Keyword(s):  
Additive Manufacturing ◽  
Inconel 718 ◽  
Metal Transfer ◽  
Cold Metal Transfer ◽  
Cold Metal ◽  
Wire Arc Additive Manufacturing

Effect of path strategy on residual stress and distortion in laser and cold metal transfer hybrid additive manufacturing

2021 ◽  
pp. 102203
Author(s):  
Runsheng Li ◽  
Guilan Wang ◽  
Xushan Zhao ◽  
Fusheng Dai ◽  
Cheng Huang ◽  
...  
Keyword(s):  
Residual Stress ◽  
Additive Manufacturing ◽  
Metal Transfer ◽  
Cold Metal Transfer ◽  
Cold Metal

scholarly journals Effect of Filler Metal Type on Microstructure and Mechanical Properties of Fabricated NiAl Bronze Alloy Using Wire Arc Additive Manufacturing System

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 513
Author(s):  
Jae Won Kim ◽  
Jae-Deuk Kim ◽  
Jooyoung Cheon ◽  
Changwook Ji
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Additive Manufacturing ◽  
Filler Metal ◽  
Gas Metal Arc Welding ◽  
Metal Wire ◽  
Cold Metal Transfer ◽  
Metal Type ◽  
Cold Metal ◽  
Wire Arc Additive Manufacturing

This study observed the effect of filler metal type on mechanical properties of NAB (NiAl-bronze) material fabricated using wire arc additive manufacturing (WAAM) technology. The selection of filler metal type is must consider the field condition, mechanical properties required by customers, and economics. This study analyzed the bead shape for representative two kind of filler metal types use to maintenance and fabricated a two-dimensional bulk NAB material. The cold metal transfer (CMT) mode of gas metal arc welding (GMAW) was used. For a comparison of mechanical properties, the study obtained three specimens per welding direction from the fabricated bulk NAB material. In the tensile test, the NAB material deposited using filler metal wire A showed higher tensile strength and lower elongation (approx. +71 MPa yield strength, +107.1 MPa ultimate tensile strength, −12.4% elongation) than that deposited with filler metal wire B. The reason is that, a mixture of tangled fine α platelets and dense lamellar eutectoid α + κIII structure with β´ phases was observed in the wall made with filler metal wire A. On the other hand, the wall made with filler metal wire B was dominated by coarse α phases and lamellar eutectoid α + κIII structure in between.

scholarly journals Comparative Study of Laser-Arc Hybrid Welding for AA6082-T6 Aluminum Alloy with Two Different Arc Modes

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 407 ◽  
Author(s):  
Xiaohui Han ◽  
Zhibin Yang ◽  
Yin Ma ◽  
Chunyuan Shi ◽  
Zhibin Xin
Keyword(s):  
Aluminum Alloy ◽  
Heat Affected Zone ◽  
Metal Transfer ◽  
Inert Gas ◽  
Hybrid Welding ◽  
Cold Metal Transfer ◽  
Melted Zone ◽  
Cold Metal ◽  
Fracture Features ◽  
Softening Region

The effects of arc modes on laser-arc hybrid welding for AA6082-T6 aluminum alloy were comparatively studied. Two arc modes were employed: pulsed metal inert gas arc and cold metal transfer arc. The results indicated that joints without porosity, undercutting, or other defects were obtained with both laser-pulsed metal inert gas hybrid welding (LPMHW) and laser-cold metal transfer hybrid welding (LCHW). Spatter was reduced, and even disappeared, during the LCHW process. The sizes of equiaxed dendrites and the width of the partially melted zone in the LPMHW joint were larger than those in the LCHW joint. The microhardness in each zone of the LPMHW joint was lower than that of the LCHW joint. The softening region in the heat-affected zone of the LPMHW joint was wider than that of the LCHW joint. The tensile strength of the LCHW joint was higher than that of the LPMHW joint. For the two joints, the fractures all occurred in the softening region in the heat-affected zone, and the fracture morphologies showed ductile fracture features. The dimples in the fractograph of the LCHW joint were deeper than those of the LPMHW joint.

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