A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of Micro-plasma Arc Welding System for Different Thickness Dissimilar Austenitic Stainless Steels
https://orcid.org/http://orcid.org/0000-0003-2553-831X
With the miniaturization of the components, micro-fabrication has gained significant attention for the application in micro-devices. The current work aims to weld dissimilar austenitic stainless steels with different thickness (average ~ 700 µm) by downscaling the traditional arc-based joining process. Micro-plasma arc welding (µ-PAW) with less than 15 A current is used to fabricate the weld joints at different heat input, which can be reviewed as a substitute for laser and electron beam welding process in terms of cost-effectiveness. The welding fixture employed to hold the small workpiece contributes significantly to achieve the complete establishment of the µ-PAW process. A low amount of heat input leads to reduced dendritic and secondary dendritic arm spacing, which increases the joint efficiency up to ~ 115%. A high value of heat input changes the mode of failure from ductile to mixed mode due to micro/macro-voids’ existence, decreases the corrosion resistance due to chromium depletion from 25 to 17 wt.%, and increases the number and size of the pores. A finite element-based computational model is also employed to presume the geometrical dimensions of the weld joint that agree well with the experimentally determined values with a maximum error of 9%.
Development of Micro-plasma Arc Welding System for Different Thickness Dissimilar Austenitic Stainless Steels
https://orcid.org/http://orcid.org/0000-0003-2553-831X
With the miniaturization of the components, micro-fabrication has gained significant attention for the application in micro-devices. The current work aims to weld dissimilar austenitic stainless steels with different thickness (average ~ 700 µm) by downscaling the traditional arc-based joining process. Micro-plasma arc welding (µ-PAW) with less than 15 A current is used to fabricate the weld joints at different heat input, which can be reviewed as a substitute for laser and electron beam welding process in terms of cost-effectiveness. The welding fixture employed to hold the small workpiece contributes significantly to achieve the complete establishment of the µ-PAW process. A low amount of heat input leads to reduced dendritic and secondary dendritic arm spacing, which increases the joint efficiency up to ~ 115%. A high value of heat input changes the mode of failure from ductile to mixed mode due to micro/macro-voids’ existence, decreases the corrosion resistance due to chromium depletion from 25 to 17 wt.%, and increases the number and size of the pores. A finite element-based computational model is also employed to presume the geometrical dimensions of the weld joint that agree well with the experimentally determined values with a maximum error of 9%.
Development of Micro-plasma Arc Welding System for Different Thickness Dissimilar Austenitic Stainless Steels
https://orcid.org/http://orcid.org/0000-0003-2553-831X
With the miniaturization of the components, micro-fabrication has gained significant attention for the application in micro-devices. The current work aims to weld dissimilar austenitic stainless steels with different thickness (average ~ 700 µm) by downscaling the traditional arc-based joining process. Micro-plasma arc welding (µ-PAW) with less than 15 A current is used to fabricate the weld joints at different heat input, which can be reviewed as a substitute for laser and electron beam welding process in terms of cost-effectiveness. The welding fixture employed to hold the small workpiece contributes significantly to achieve the complete establishment of the µ-PAW process. A low amount of heat input leads to reduced dendritic and secondary dendritic arm spacing, which increases the joint efficiency up to ~ 115%. A high value of heat input changes the mode of failure from ductile to mixed mode due to micro/macro-voids’ existence, decreases the corrosion resistance due to chromium depletion from 25 to 17 wt.%, and increases the number and size of the pores. A finite element-based computational model is also employed to presume the geometrical dimensions of the weld joint that agree well with the experimentally determined values with a maximum error of 9%.
Development of Micro-plasma Arc Welding System for Different Thickness Dissimilar Austenitic Stainless Steels
J. Inst. Eng. India Ser. C
Dwibedi, Swagat (author) / Bag, Swarup (author)
Journal of The Institution of Engineers (India): Series C ; 102 ; 657-671
2021-06-01
15 pages
Article (Journal)
Electronic Resource
English
Dissimilar friction stir welding of AISI 430 ferritic and AISI 304L austenitic stainless steels
| Springer Verlag | 2020
Dissimilar friction stir welding of AISI 430 ferritic and AISI 304L austenitic stainless steels
| Springer Verlag | 2020
| British Library Online Contents | 2008