Mechanical properties of Al-Zn-Mg alloys investigated by microhardness measurements

A. Juhász, P. Tasnádi, I. Kovács, T. Ungár

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

One of the most simple and economic methods of testing the mechanical properties of alloys is the microhardness measurement. In the present paper we report on the results and the interpretation of experiments carried out on a series of AI-Zn-Mg alloys prepared from high purity base materials. The following results were obtained: (a) the incremental microhardness, ΔHV, was related to the microhardness, HV, of high purity Al and can be given as ΔHV=264(Cmg-0.25Czn) where cmg and Czn are the concentrations of Mg and Zn respectively, in the as-quenched state after solution heattreatment, (b) the ultimate tensile strength and the microhardness were correlated by the approximation:HV≅3σu. ΔHV was investigated in the light of the average radius and the volume fraction of zones forming at room temperature. On the basis of the micromechanism of plastic deformation further evidence was found to show that the shearing mechanism is responsible for strengthening by GP zones in AI-Zn-Mg alloys.

Original languageEnglish
Pages (from-to)367-372
Number of pages6
JournalJournal of Materials Science
Volume16
Issue number2
DOIs
Publication statusPublished - Feb 1981

Fingerprint

Microhardness
microhardness
mechanical properties
Mechanical properties
purity
Strengthening (metal)
shearing
Shearing
tensile strength
plastic deformation
economics
Volume fraction
Plastic deformation
Tensile strength
Economics
radii
Mg-Al-Zn-Mn-Si-Cu alloy
Testing
room temperature
approximation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)

Cite this

Mechanical properties of Al-Zn-Mg alloys investigated by microhardness measurements. / Juhász, A.; Tasnádi, P.; Kovács, I.; Ungár, T.

In: Journal of Materials Science, Vol. 16, No. 2, 02.1981, p. 367-372.

Research output: Contribution to journalArticle

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