Failure Analysis of Cast Tubular Specimens of Al-5Zn-1Mg While Processing at Room Temperature by Equal Channel Angular Pressing (ECAP).
- Resource Type
- Article
- Authors
- Valder, James; Rijesh, M.; Surendranathan, A.
- Source
- Journal of Failure Analysis & Prevention. Oct2014, Vol. 14 Issue 5, p690-695. 6p.
- Subject
- *FAILURE analysis
*MATERIAL plasticity
*STRUCTURAL engineering
*EXTRUSION process
*CROSS-sectional method
- Language
- ISSN
- 1547-7029
The ECAP process is a promising technique for imparting large plastic deformation and breaking down the ingot cast structure without a resultant decrease in cross-sectional area. In the present study, the suitability of this technique for processing cast Al-5Zn-1Mg tubular specimens at room temperature has been investigated. Tubular specimens were extruded through an ECAP die with an angle of 150° between the two intersecting channels without a back pressure. Sand was used as a mandrel during pressing. The tubular specimens failed miserably in the first pass itself. A failure analysis was carried out using SEM, and cause for failure was determined. [ABSTRACT FROM AUTHOR]