Shanmugasundaram, T. ; Subramanya Sarma, V. ; Murty, B. S. ; Heilmaier, Martin (2008) High strength bulk nanostructured 2219 Al alloy produced by high energy ball milling and hot pressing Materials Science Forum, 584-586 . pp. 97-101. ISSN 0255-5476
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Official URL: http://www.scientific.net/MSF.584-586.97
Related URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.584-586.97
Abstract
The microstructure and mechanical properties of nano-crystalline 2219 Al alloy (Al-6.4Cu-0.29Mn, all in wt %) was studied. Nanocrystalline powders were produced from gas atomized 2219 Al alloy powders by high energy ball milling at room temperature. Powders were collected at different milling times and X-ray diffraction (XRD) analysis was used to evaluate grain size. High Vickers hardness (250HV), high compressive strength (920 MPa) and low ductility (2%) were observed in unimodal bulk nanostructured 2219 Al alloys consolidated to 99% density by hot pressing (HP). In addition, these nanocrystalline powders were blended with 15, 30 and 50% of (gas atomized) coarse-grained powders to obtain balanced mechanical properties of enhanced yield and ultimate strength and reasonable ductility and toughness as compared to either conventional or nanocrystalline 2219 alloys.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Trans Tech Publications Inc. |
| Keywords: | Aluminium Alloy; Hot-pressing; Mechanical Properties; Nanocrystalline Material; X-ray Diffraction (XRD) |
| ID Code: | 73915 |
| Deposited On: | 08 Dec 2011 03:53 |
| Last Modified: | 08 Dec 2011 03:53 |
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