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Authors
Affiliations
1 Materials and Mechanical Entity, Vikram Sarabhai Space Centre, Thiruvananthapuram 695 022, IN
2 Mishra Dhatu Nigam Limited, Hyderabad 500 058, IN
Source
Current Science, Vol 114, No 01 (2018), Pagination: 131-136
Abstract
Ti6Al4V owing to its high specific strength and Inconel-718 due to its high strength and oxidation resistance at elevated temperatures, have been used in Reusable Launch Vehicle-Technology Demonstrator (RLV-TD). Achieving required properties in large cross-section aerospace quality forgings of these alloys is challenging and has not been reported earlier. Hence, thermo-mechanical processing cycles have been devised to realize forgings of ~1400 mm length in these alloys and successfully used in RLV-TD. Forgings of these alloys having desired microstructures and ultrasonic quality of Class-A1 as per AMS 2630 B standard have been realized. This article discusses the processing challenges and solutions thereof.
Keywords
Aerospace Alloys, Forging, Microstructure, Ultrasonic Quality.
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References
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