Accession Number : ADA118614

Title :   Fundamental Investigations of Superplastic Forming Processes.

Descriptive Note : Final scientific rept. 1 Feb 79-31 Jan 82,

Corporate Author : CALIFORNIA UNIV DAVIS DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Mukherjee,Amiya K ; Arieli,A

PDF Url : ADA118614

Report Date : Mar 1982

Pagination or Media Count : 74

Abstract : The elevated deformation behavior of Zn-22% Al alloy was investigated, with special emphasis on the micromechanisms of deformation. Constant strain rate data on flow stress vs strain rate at different temperature and with specimens with different grain sizes were analyzed. From this analysis the constitutive equations for superplastic creep, dislocation-climb creep, coble creep and Nabarro creep processes were established. Finally the results were depicted in the form of a three-dimensional deformation mechanism map with normalized parameters of grain size, temperature and stress as the coordinates. (Author)

Descriptors :   *Zinc alloys, *Deformation, Aluminum alloys, Strain rate, Stress strain relations, Creep, Three dimensional, Maps, Grain size, Temperature, Stresses

Subject Categories : Metallurgy and Metallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE