| dc.contributor.author | Naeem, Haider T. | |
| dc.contributor.author | Khairel Rafezi, Ahmad, Dr. | |
| dc.contributor.author | Kahtan Sadiq, Muhammed, Dr | |
| dc.contributor.author | Azmi, Rahmat, Prof. | |
| dc.date.accessioned | 2015-03-05T07:59:29Z | |
| dc.date.available | 2015-03-05T07:59:29Z | |
| dc.date.issued | 2014-04 | |
| dc.identifier.citation | Advanced Materials Research, vol.925, 2014, pages 258-262 | en_US |
| dc.identifier.issn | 1662-8985 | |
| dc.identifier.uri | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/39124 | |
| dc.description | Link to publisher's homepage at http://www.ttp.net/ | en_US |
| dc.description.abstract | In this study the evolution of the retrogression and reaging (RRA) heat treatment process on microstructure and mechanical properties of AA 7075 Al-alloys which produced by semi-direct chill (DC) casting process were investigated. Al-Zn-Mg-Cu alloys were homogenized at different heat treatment conditions, aged at 120°C for 24 h (T6), and retrogressed at 180°C for 30 min then re-aged at 120°C for 24 h (RRA). The results showed that this three-step process of the heat treatments, the mechanical properties of alloys was substantially improved. The highest ultimate tensile strength and Vickers hardness attained for the retrogression and re-aging about 530 MPa and 223 HV respectively. The precipitation strengthening is responsible about improve the strength under impact the retrogression and re-aging process. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Trans Tech Publications Inc. | en_US |
| dc.subject | Aluminum alloy | en_US |
| dc.subject | Heat treatment | en_US |
| dc.subject | Microstructural | en_US |
| dc.subject | Ultimate Tensile Strength (UTS) | en_US |
| dc.title | Evolution of the retrogression and reaging treatment on microstructure and properties of Aluminum Alloy (Al-Zn-Mg-Cu) | en_US |
| dc.type | Article | en_US |
| dc.identifier.url | http://www.scientific.net/AMR.925.258 | |
| dc.contributor.url | haider_neem@yahoo.com | en_US |
