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Effect of cryogenic and aging treatments on low-energy impact behaviour of Ti-6Al-4V alloy

Transactions of Nonferrous Metals Society of China 2017年第3期27卷 514-526页

作者： Y. PEKBEY K. ASLANTAS Y. PEKBEY Department of Mechanical Engineering University of Afyon Kocatepe Afyon-03000 Turkey Department of Mechanical Engineering University of Ege 輟mir-35030 Turkey Department of Mechanical Engineering University of Ege Izmir-35030 Turkey

The objective of this study is to examine the effects of cryogenic and aging treatments on the impact strength andmechanical properties of Ti?6Al?4V *** accomplish that objective,cryogenic treatment(CT),aging treatment(AT)andcryogenic treatment followed by aging treatment(CAT)were conducted on Ti?6Al?4V *** tests were performed onheat-treated and untreated samples using different impactor nose geometries(hemispherical,60°and90°conical)to determine theeffect of impactor nose geometry on the damage *** findings showed that energy absorption increased and areas ofdamage decreased as a result of heat treatment in all treated *** highest energy absorption was observed in the CATsamples,due to the increase in energy absorption,the smallest damaged area occurred in the CAT sample,and the largestdeformation was seen in the untreated ***,it was seen that the damaged area and deflection were stronglydependent on impactor nose *** maximum deflection and narrowest deformation area were seen with60o conical *** deformation area increased with increasing impactor nose angle.

关键词： Ti.6Al.4V alloy cryogenic treatment aging treatment low-energy impact test impact damage impactor nose geometry

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