@inproceedings{632d31a7d8304798bd2140abb116d874,
title = "Effect of Wire EDM on microstructure and fracture toughness of 7075-T6511 aluminum alloy",
abstract = "This paper reports on an investigation conducted to establish the influence of Wire Electrical Discharge Machining (WEDM) on the fracture toughness of aluminum 7075-T6511. The main objective was to determine if WEDM can be used to introduce a pre-crack into a compact tension specimen instead of the ASTM E-1820-11 specified fatigue pre-crack method. Fracture tests were conducted on four specimens which were pre-cracked using the WEDM technique. The rest of the fracture toughness evaluation followed the ASTM E-1820-11 guidelines. Results obtained from the experimental data were found to be inconsistent with the theoretical expectations. The fracture toughness was found to be significantly dependent on the effect of the WEDM on the material. The WEDM introduced a Heat Affected Zone (HAZ) on the surface of the pre-crack which modifies the fracture behavior of the material. It was concluded that WEDM is not a viable alternative to create a pre-crack in a compact tension specimen to perform fracture toughness testing of aluminum 7075-T6511.",
keywords = "707S-T6s11 aluminum alloy, Compact tension specimen, EDM, Fracture toughness, Microstructure, Wire EDM",
author = "Madyira, {Daniel M.}",
year = "2015",
language = "English",
series = "Lecture Notes in Engineering and Computer Science",
publisher = "Newswood Limited",
pages = "1038--1042",
editor = "Ao, {S. I.} and Len Gelman and Len Gelman and Hukins, {David W.L.} and Andrew Hunter and Korsunsky, {Alexander M.} and Ao, {S. I.} and Ao, {S. I.}",
booktitle = "WCE 2015 - World Congress on Engineering 2015",
note = "2015 World Congress on Engineering, WCE 2015 ; Conference date: 01-07-2015 Through 03-07-2015",
}
