About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-33: Enhancement of Mechanical Properties by Large Strain Extrusion Machining of Aluminum Alloy |
Author(s) |
Vagish Datta Mishra, Karthik Palaniappan, Balkrishna C. Rao, Murthy H. |
On-Site Speaker (Planned) |
Vagish Datta Mishra |
Abstract Scope |
Mechanical properties of Al6061 alloy, a light metal alloy, can be enhanced by microstructure evolution by many mechanical processes. In current effort, large strain extrusion machining (LSEM) with different chip compression-ratio (3.7, 2, 1, 0.7, and 0.5) was used to control final foil-thickness and microstructure. Low-speed-machining was performed to reduce heat generation in primary shear zone and interface between chip-tool and to avoid re-crystallization in foil. Significant decrease in grains size (~15µm) of foil compared to bulk (~165µm) while hardness increased by nearly 70% were found. Orthogonal plain-strain machining and LSEM results in nearly same grains-size decrement and hardness enhancement with LSEM affording control of geometry of bulk form. There was no significant increment in hardness with further decrement in chip compression ratio. Fine-grained foils were found stronger and brittle in nature which can be used with ductile matrix in the form of powder or in the form of foils. |
Proceedings Inclusion? |
Undecided |