S51 Influence of Cold Compression on the Residual Stresses in 7449 Forgings

Autor:	Darren J. Hughes, Jeremy S. Robinson, E. C. Oliver, M.E. Fox, Christopher E Truman, Sayeed Hossain
Rok vydání:	2008
Předmět:	Radiation Materials science Metallurgy Alloy Neutron diffraction engineering.material Condensed Matter Physics Compression (physics) Forging Stress (mechanics) Deep hole drilling Residual stress Ultimate tensile strength engineering General Materials Science Instrumentation
Zdroj:	Powder Diffraction. 23:187-187
ISSN:	1945-7413 0885-7156
DOI:	10.1154/1.2951814
Popis:	The through-thickness residual stress distributions within three large rectilinear alum inium alloy 7449 forgings have been determined using neutron diffraction. The results from two neutron diffraction instruments, ENGIN-X at ISIS, UK and SALSA at ILL, France are reported. Both instruments indicate large magnitude (>250 MPa) tensile residual stresses in the core of the as quenched forging balanced by surface regions stressed in compression (> -200MPa). The other two forgings had been stress relieved by cold compression and had significantly lower residual stress than the as-quenched forging. Increasing the amount of cold compression from 2½% to 4% was found to cause an insignificant difference in the final residual stress distribution. The neutron diffraction results are also compared to measurements made by the new incremental deep hole drilling technique and show good correlation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::deb76eeb318ea37d07a9bcbbc68613cb https://doi.org/10.1154/1.2951814 Zobrazit plný text záznamu