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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11343
Title: Effect of pressure pulsation on bond interface characteristics of 409 ferritic stainless steel diffusion bonds
Authors: Sharma G.
Dwivedi, Dheerendra Kumar
Published in: Vacuum
Abstract: In present study, impulse pressure assisted diffusion bonding (IPADB) technique was applied for diffusion bonding of 409 ferritic stainless steel plates. The effect of diffusion bonding process parameters i.e. maximum pulse pressure and pressure pulses on bond interface characteristics and mechanical properties was investigated. The bonds were analyzed by field emission scanning electron microscope (FESEM) and using these micrographs interface bonding ratio was measured, which is defined as the ratio of void free interface length to the total interface length. The pressure pulsation improved the interface bonding ratio by reducing the voids at the interface. At 40 MPa maximum pulse pressure and 18 pressure pulses, 43.7% improvement in interface bonding ratio of the diffusion bonds was observed with respect to those developed at same constant pressure. Hardness and tensile shear tests were performed on the diffusion bonds. A maximum shear load of 37 kN was obtained for the diffusion bonds developed at 40 MPa maximum pulse pressure and 18 pressure pulses, having the fracture from the base metal during tensile shear testing. The fracture surface of the diffusion bonds was also studied by FESEM. © 2017 Elsevier Ltd
Citation: Vacuum (2017), 146(): 152-158
URI: https://doi.org/10.1016/j.vacuum.2017.09.049
http://repository.iitr.ac.in/handle/123456789/11343
Issue Date: 2017
Publisher: Elsevier Ltd
Keywords: Bonding ratio
Diffusion bonding
Pressure pulsation
Shear strength
ISSN: 0042207X
Author Scopus IDs: 57202314913
7004266679
Author Affiliations: Sharma, G., Department of Mechanical & Industrial Engineering, Indian Institute of Technology Roorkee, Uttarakhand, 247667, India
Dwivedi, D.K., Department of Mechanical & Industrial Engineering, Indian Institute of Technology Roorkee, Uttarakhand, 247667, India
Funding Details: Authors are grateful to the Ministry of Steel, India for their financial support to the project under the grant No: 11(1)/SDF/2010-TW to perform this work.
Corresponding Author: Sharma, G.; Department of Mechanical & Industrial Engineering, Indian Institute of Technology RoorkeeIndia; email: gauraviitr1992@gmail.com
Appears in Collections:Journal Publications [ME]

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