ISSN:
1662-7482
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
High strain-rate compressive responses of AA7075-T651 and its welds as produced bythe friction stir welding (or FSW) process are investigated using the conventional split Hopkinsonpressure bar. Cylindrical specimens machined along the thickness direction of the base material(AA7075-T651) and the friction stir (FS) welds are used in the static and impact compression tests.The micro-hardness tests are conducted across the centerline of a FS welded AA707-T651 joint inorder to examine the microstructural change. It is shown that FSW reduces the compressive flowstress of the FS weld (weld nugget) to below that of the base material, and both the base materialand the FS weld exhibit almost no strain rate effects up to nearly€ε˙ =103/s
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.7-8.251.pdf
