Mitigation of heat treatment distortion of AA 7075 aluminum alloy by deep cryogenic processing using the Navy C-ring test
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Tushar Sonar
Mr. Tushar Sonar is a doctoral student in the Centre for Materials Joining & Research (CEMAJOR) Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, India. He is a recipient of ISRO RESPOND Research Fellowship from Indian Space Research Organization (ISRO), Department of Space, Government of India. He has published 20 papers in international peer-reviewed journals. He has 3.6 years of research experience in the area of welding of nickel based superalloys. His research interests include welding and joining, additive manufacturing and heat treatment of metals.
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Visvalingam Balasubramanian
Dr. V. Balasubramanian currently works as a professor and head in the Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, India. He obtained his Ph.D. from the Indian Institute of Technology Madras (IITM), Chennai in 2000. He has 25 years of teaching and research experience. He has published more than 380 papers in international peer-reviewed journals and supervised 25 Ph.D. scholars. He has completed 25 R&D projects funded by various funding agencies such as DST, DRDO, UGC, AICTE, DAE NRB & ARDB, Ministry of Environment & Forest. His areas of interest include materials joining, surface engineering and nanomaterials.
Dr. S. Malarvizhi currently works as a professor in the Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, India. She obtained her PhD from Annamalai University, Chidambaram 2008. She has 20 years of teaching and research experience. She has published more than 50 research papers in international peer-reviewed journals. Her areas of interest include welding technology and materials science. She has completed various sponsored R&D projects from various funding agencies such as AICTE, UGC, DST, DRDO, CSIR & MEF.
Abstract
Heat treatment is a promising approach to advance the mechanical properties of AA 7075 aluminum alloy for aerospace structural applications. Quenching is commonly performed after solutionizing of AA 7075 aluminum alloy to impart supersaturated solid solution condition. It involves rapid cooling of the previously solutionized part to room temperature with water as a quenching medium. It leads to severe distortion of the structural part and deteriorates its surface integrity due to the high thermal residual stresses. This paper reports the distortion behavior of heat-treated AA 7075 aluminum alloy by implementing the standard Navy C-ring test. For precise measurements, the coordinate measuring machine (CMM) was used. Deep cryogenic treatment (DCT) was executed after conventional heat treatment (CHT) to reduce the tensile residual stresses and mitigate the distortion potential of AA 7075 aluminum alloy. Results showed significant improvement in surface finish and hardness of deep cryogenically treated AA 7075 aluminum alloy. It is attributed to the precipitation of fine spherical second phase particles distributed uniformly in the matrix. The distortion potential of heat-treated AA 7075 aluminum alloy is minimized by 30.7 % by deep cryogenic processing. It is correlated to the counterbalancing of tensile residual stresses in the heat treated part by compressive residual stresses ensued by deep cryogenic quenching.
About the authors
Mr. Tushar Sonar is a doctoral student in the Centre for Materials Joining & Research (CEMAJOR) Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, India. He is a recipient of ISRO RESPOND Research Fellowship from Indian Space Research Organization (ISRO), Department of Space, Government of India. He has published 20 papers in international peer-reviewed journals. He has 3.6 years of research experience in the area of welding of nickel based superalloys. His research interests include welding and joining, additive manufacturing and heat treatment of metals.
Dr. V. Balasubramanian currently works as a professor and head in the Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, India. He obtained his Ph.D. from the Indian Institute of Technology Madras (IITM), Chennai in 2000. He has 25 years of teaching and research experience. He has published more than 380 papers in international peer-reviewed journals and supervised 25 Ph.D. scholars. He has completed 25 R&D projects funded by various funding agencies such as DST, DRDO, UGC, AICTE, DAE NRB & ARDB, Ministry of Environment & Forest. His areas of interest include materials joining, surface engineering and nanomaterials.
Dr. S. Malarvizhi currently works as a professor in the Centre for Materials Joining & Research (CEMAJOR), Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, India. She obtained her PhD from Annamalai University, Chidambaram 2008. She has 20 years of teaching and research experience. She has published more than 50 research papers in international peer-reviewed journals. Her areas of interest include welding technology and materials science. She has completed various sponsored R&D projects from various funding agencies such as AICTE, UGC, DST, DRDO, CSIR & MEF.
Acknowledgement
The authors express their gratitude to Kry-ospace, Kharadi for providing Cryogenic Treatment facility. The authors are thankful to Upturn Precision Pvt. Ltd. and Meas-urewell technologies, Waluj, for Navy C-ring manufacturing and for providing the CMM measurement facility.
References
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© 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany
Artikel in diesem Heft
- Frontmatter
- Materialography
- Long term heating effects at 1173 K and 1273 K on microstructural rejuvenation in various modified alloys based on GTD-111
- Mechanical testing
- Effect of tempering temperature on impact energy of AISI 410 martensitic stainless steel at low temperatures
- Fatigue testing
- Evaluation of S-N curves including failure probabilities using short-time procedures
- Statistical evaluation of fatigue tests using maximum likelihood
- Materials testing for joining and additive manufacturing applications
- Microstructure and mechanical properties of 6082-T6 aluminum alloy–zinc coated steel braze-welded joints
- Mechanical testing/Numerical simulations
- Evaluation of chilled casting and extrusion-shear forming technology based on numerical simulation and experiments
- Materials testing for welding and additive manufacturing applications
- Effects of laser and GMA hybrid welding parameters on shape, residual stress and deformation of HSLA steel welds
- Analysis of physical and chemical properties
- Vibration damping capacity of deep cryogenic treated AISI 4140 steel shaft supported by rolling element bearings
- Component-oriented testing and simulation
- Optimal design and experimental investigation of teeth connection joint on a filament wound composite transmission shaft
- Mechanical testing
- Mitigation of heat treatment distortion of AA 7075 aluminum alloy by deep cryogenic processing using the Navy C-ring test
- Production and desin-oriented testing
- Optimal design of differential mount using nature-inspired optimization methods
- Fatigue testing
- Fatigue Life and Stress Analysis of the Crankshaft of a Single Cylinder Diesel Engine under Variable Forces and Speeds
- Analysis of physical and chemical properties
- Effect of Bi dopant on morphological and optical properties of ZnO semiconductor films produced by the sol-gel spin coating process
- Mechanical Testing
- Husking and mechanical properties of ISAF N231/SAF N110 carbon black filled XNBR-ENR blend rubber compound for rice husk removal applications
Artikel in diesem Heft
- Frontmatter
- Materialography
- Long term heating effects at 1173 K and 1273 K on microstructural rejuvenation in various modified alloys based on GTD-111
- Mechanical testing
- Effect of tempering temperature on impact energy of AISI 410 martensitic stainless steel at low temperatures
- Fatigue testing
- Evaluation of S-N curves including failure probabilities using short-time procedures
- Statistical evaluation of fatigue tests using maximum likelihood
- Materials testing for joining and additive manufacturing applications
- Microstructure and mechanical properties of 6082-T6 aluminum alloy–zinc coated steel braze-welded joints
- Mechanical testing/Numerical simulations
- Evaluation of chilled casting and extrusion-shear forming technology based on numerical simulation and experiments
- Materials testing for welding and additive manufacturing applications
- Effects of laser and GMA hybrid welding parameters on shape, residual stress and deformation of HSLA steel welds
- Analysis of physical and chemical properties
- Vibration damping capacity of deep cryogenic treated AISI 4140 steel shaft supported by rolling element bearings
- Component-oriented testing and simulation
- Optimal design and experimental investigation of teeth connection joint on a filament wound composite transmission shaft
- Mechanical testing
- Mitigation of heat treatment distortion of AA 7075 aluminum alloy by deep cryogenic processing using the Navy C-ring test
- Production and desin-oriented testing
- Optimal design of differential mount using nature-inspired optimization methods
- Fatigue testing
- Fatigue Life and Stress Analysis of the Crankshaft of a Single Cylinder Diesel Engine under Variable Forces and Speeds
- Analysis of physical and chemical properties
- Effect of Bi dopant on morphological and optical properties of ZnO semiconductor films produced by the sol-gel spin coating process
- Mechanical Testing
- Husking and mechanical properties of ISAF N231/SAF N110 carbon black filled XNBR-ENR blend rubber compound for rice husk removal applications
