skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

The Role of cobalt and nickel intermetallic phases on the mechanical properties and microstructure evolution of Al-Zn-Mg-Cu alloys

Materials research (São Carlos, São Paulo, Brazil), 2014-12, Vol.17 (6), p.1663-1676 [Peer Reviewed Journal]

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. ;ISSN: 1516-1439 ;ISSN: 1980-5373 ;EISSN: 1980-5373 ;DOI: 10.1590/1516-1439.312114

Full text available

Citations Cited by
  • Title:
    The Role of cobalt and nickel intermetallic phases on the mechanical properties and microstructure evolution of Al-Zn-Mg-Cu alloys
  • Author: Naeem, Haider Tawfiq ; Mohammed, Kahtan Sadeq ; Ahmad, Khairel Rafiez
  • Subjects: Al-Zn-Mg-Cu alloys ; Alloys ; ALUMINUM ALLOYS (50 TO 99 AL) ; Aluminum base alloys ; Cobalt ; COBALT ALLOYS (50 TO 99 CO) ; Copper ; Dispersion ; ENGINEERING, CHEMICAL ; HEAT TREATING ; Heat treatment ; INTERMETALLIC COMPOUNDS ; MATERIALS SCIENCE, MULTIDISCIPLINARY ; MECHANICAL PROPERTIES ; METALLURGY & METALLURGICAL ENGINEERING ; Microstructure ; MICROSTRUCTURES ; Nickel ; nickel additives ; RRA treatments ; TENSILE STRENGTH ; Ultimate tensile strength ; Zinc
  • Is Part Of: Materials research (São Carlos, São Paulo, Brazil), 2014-12, Vol.17 (6), p.1663-1676
  • Description: In this study, the effects of cobalt and nickel additions on microstructure evolution and mechanical properties of Al-Zn-Mg-Cu alloys produced by chill casting process were investigated. Al-Zn-Mg-Cu aluminum alloys containing Ni and Co additives were homogenized at different heat treatment conditions, aged at 120[degrees]C for 24 h, and retrogressed at 180[degrees]C for 30 min then re-aged at 120[degrees]C for 24h. Comparison of the ultimate tensile strength of the Al-Zn-Mg-Cu base alloy underwent RRA temper process with that of the base alloy underwent a similar heat treatment process after the addition of 0.5 wt. % Ni and 0.5 wt. % Co showed that the gains of tensile strengths of the orders of 100 MPa and 135 MPa were attained respectively. These improvements are attributed to phase dispersion particles of the formation of Ni and Co-rich such as Al sub(7) Cu sub(4) Ni, Al sub(75) Ni sub(10) Fe sub(15), Al sub(3) Ni sub(2) and Al sub(70) Co sub(15) Ni sub(15). The dispersed particles of nickel or/and cobalt have improved the ultimate tensile strength to reach 630 MPa and 665 MPa and the hardness HV values to 250 MPa and 265 MPa respectively. Besides dispersion, Ni and Co intermetallic dispersoids retarded the grain growth, led to grain refinement and precipitation hardening and resulted in further strengthening of the Al alloy. Microstructure characterization of the alloys was carried out using optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD).
  • Publisher: ABM, ABC, ABPol
  • Language: English;Portuguese;Spanish
  • Identifier: ISSN: 1516-1439
    ISSN: 1980-5373
    EISSN: 1980-5373
    DOI: 10.1590/1516-1439.312114
  • Source: SciELO
    Geneva Foundation Free Medical Journals at publisher websites
    DOAJ Directory of Open Access Journals
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait