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Effect of copper-rich regions on tensile properties of VPPA weldments of 2219-T87 aluminum
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hartman, J. A. Beil, Richard J. Hahn, George T. |
| Copyright Year | 1987 |
| Abstract | This study examines the relations between tensile properties and microstructural features of variable polarity plasma arc (VPPA) weldments of 2219T87 aluminum. Crack initiation and weld failure of transverse tensile specimens of single and multipass weldments were studied. The specimens fractured on the rising portion of the stress-strain curve prior to necking, signifying that an increase in strength would accompany an increase in ductility. Of particular interest is a shallow, typically 0.001-0.003-in. (0.03-0.08-mm) deep, copper-rich region located in the crown and root corners of the weld. This region is a primary source of crack initiation and growth, due to its brittle nature and highly strained location. The brittle regions were removed by electropolishing and machining to determine their effect on weld tensile properties. The |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://app.aws.org/wj/supplement/WJ_1987_03_s73.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
