Significant Enhancement in Cryogenic Mechanical Properties of Cu–Al Alloy via Minor Recrystallization. Issue 3 (30th November 2018)

• Record Type: Journal Article
• Authors: Lin, H. R.; Tian, Y. Z.; Sun, S. J.; Yang, H. J.; Zhang, Z. F.
• Is Part Of: Advanced engineering materials. Volume 21:Issue 3(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-11-30
• Subjects: Cu–Al alloy -- deformation twin -- ductility -- recrystallization -- strength -- temperature; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201800889
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The mechanical properties of cold‐rolled (CR) and partially recrystallized (PRX) Cu–Al alloy are investigated by tensile tests at 77 and 293 K. While the uniform elongation is limited for the CR specimens at both temperatures, uniform elongation is enhanced unprecedentedly from 2.4% at 293 K to 16.5% at 77 K for the PRX specimens. In contrast to the sole contribution of recrystallized grains via wavy slip at 293 K, the prominent uniform elongation at 77 K is attributed to the multiple deformation mechanisms within recrystallized grains and the harmonization of plastic deformation between recrystallized grains and matrix. Abstract : The mechanical properties of cold‐rolled (CR) and partially recrystallized (PRX) Cu–Al alloy are investigated by tensile tests at 77 and 293 K. The prominent uniform elongation at 77 K is attributed to the multiple deformation mechanisms within recrystallized grains and the harmonization of plastic deformation between recrystallized grains and matrix..