Year: 2012
Type: article
Abstract: Plastic deformation and ductile fracture of Ti-6Al-4V plate stock is investigated under multiple loading conditions.The objective of this study is to generate experimental data that can be used for the development and calibration of constitutive and failure models for numerical simulations of dynamic events.Plastic deformation is investigated at various strain rates, orientations, temperatures, and stocks.The stress state dependence of ductile fracture is also investigated.Uniaxial tension, compression, and pure shear experiments are conducted at strain rates ranging from 1.0 × 10 -4 s -1 to 8000s -1 .Specimens are fabricated from several sheet and plate stocks with thicknesses of 2.29mm, 3.56mm, 6.35mm, and 12.7mm.Compression and tension tests are conducted with specimens oriented in several different directions.These data show significant strain rate sensitivity in tension, compression and shear.Both plates exhibit anisotropic plastic deformation behavior in tension and compression.The response of each of the plates are significantly different for yield stress, flow stress, hardening, failure, and anisotropic effects.Ductile fracture testing is conducted at various stress states, which are achieved with mechanical tests on various sample geometries subjected to various loading conditions.Tension tests are conducted on thin flat specimens, wide flat specimens and axisymmetric specimens with varying notch radii.Thin walled tube specimens are subjected to combined axial-torsional loading for additional states of stress.The Many people have helped me get to this point in my life and I would like to thank them.First and foremost I would like to thank my parents Bonnie and PeterHammer, without their love and support through both smooth and rough times I do not think this would have been possible.Josh and Mary Moran have also been a constant source of support and friendship.There are countless other friends that have also been a source of inspiration. My Advisor, Professor Amos Gilat,
Author: Jeremiah T. Hammer
Institution: The Ohio State University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2563530773