Deep drawing behavior of IN625 alloy under the influence of different process parameters

The Ni-Cr based IN625 alloy has been extensively used in critical applications of aerospace and nuclear industries. Various components have been manufactured using sheet metal forming processes. In the present work, the deep drawability of material has been examined under the influence of different...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-11, Vol.967 (1), p.12090
Main Authors: Morchhale, Ayush, Kotkunde, Nitin, Kumar Singh, Swadesh
Format: Article
Language:English
Subjects:
Aerospace industry
Deep drawing
Drawability
Finite element method
Metal forming
Metal sheets
Nickel base alloys
Numerical analysis
Process parameters
Superalloys
Thickness
Yield criteria
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Summary:The Ni-Cr based IN625 alloy has been extensively used in critical applications of aerospace and nuclear industries. Various components have been manufactured using sheet metal forming processes. In the present work, the deep drawability of material has been examined under the influence of different process parameters such as temperature, punch speed, lubrication, and blank holding pressure using the processing window. The deep drawability has been analyzed in three different zones, namely, safe, wrinkling, and fracture. The limit drawing ratio increased by 7.12 % on increasing the temperature from 300K to 673K. The thickness distribution across the deep-drawn component plays a crucial role in examining the quality and life of it. Therefore, in this context, a detailed analysis of different process parameters over the drawn cup's thickness distribution has been done. The minimum thickness was obtained near the punch corner or the cup junction region of the deep drawn cup. The uniformity in the thickness distribution and drawing height also increased with the forming temperature and decrease in punch speed. Additionally, two different yield criteria, namely, Hill 1948 and Barlat 1989, have been analyzed and further used for the numerical analysis using the user material subroutines in Abaqus software. The results predicted using Barlat 1989 yield criterion more closely followed the experimental results as the average absolute error obtained is well within the 5% of the acceptable limit.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/967/1/012090