ISSN:
1662-9752
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:
In this study, an Al-5.7wt% Ni eutectic alloy was subjected to severe plasticdeformation (SPD) by an equal-channel angular pressing (ECAP) technique. ECAP technique wascarried out by using two strain introduction methods, route BC and route A, at a temperature. It isfound that the Al-Ni eutectic alloy specimens after ECAP technique by route BC and route Amethods have very different microstructures which affected strongly the tensile properties of thespecimens. Namely, after ECAP technique by route BC method, the fine Al3Ni dispersoids ofabout 300 nm homogeneously dispersed in α-aluminum matrix and the samples appeared no clearanisotropic in tensile properties, while the eutectic textures containing α-Al and Al3Ni fibrousdispersoids have highly anisotropy distribution and are proved to have significant anisotropy tensileproperties after ECAP technique by route A method. Results of Young’s modulus andsimultaneous internal friction measured by dynamic mechanical analysis (DMA) were alsopresented. Based on the experimental results, the fracture mechanism during tensile process of theAl-Ni eutectic alloy by different strain induction methods was discussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.2916.pdf
