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- Title
CARACTERIZAÇÃO MECÂNICA E METALÚRGICA DAS LIGAS TIXOCONFORMADAS AA7004 E AA7075.
- Authors
Vanderlei Torres, Luis; José Zoqui, Eugênio
- Abstract
The increasing need for cost reduction in the industries, as well as the improvement of the quality of the final products, have converged to the arising of techniques that aim the improving or even replacing the existing conventional manufacturing processes, reducing the steps involved in obtaining the products and consequently reducing the involved costs. For this reason, the thixoforming process, that is, the processing of metallic alloys in the coexistence state of solid and liquid phase have gained importance in last years. This work aims to analyze the mechanical and metallurgical behavior through vickers hardness tests of AA7004 and AA7075 thixoforming alloys. The thixoforming alloys when compared to the casting condition (as received) presented elevated values of hardness, wich is an attributed fact to the material compaction. With the heat treatment of solubilization and aging there is again the increase in the hardness value, reaching values around 140 HV to the AA7004 alloy and around 160 HV to the AA7075 alloy, becoming both alloys promising raw materials to the thixoforming process.
- Subjects
MANUFACTURING processes; ALLOYS; HEAT treatment; HARDNESS testing; VICKERS hardness
- Publication
Tecnologia em Metalurgia, Materiais e Mineração, 2019, Vol 16, Issue 3, p407
- ISSN
2176-1515
- Publication type
Article
- DOI
10.4322/2176-1523.20191902