skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The softening factor cb of commercial titanium alloy wires

Journal Article · · International Journal of Materials Research
DOI:https://doi.org/10.3139/146.111834· OSTI ID:1575255
 [1];  [1];  [1];  [1];  [2]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
+ Show Author Affiliations

The strain-rate sensitivity exponent m and activation volume υ* are often used to characterize the strain-rate sensitivity of strength behavior in metals and alloys. Complications can arise when the m and υ* values become indeterminate, due to factors such as an inherent scatter in the mechanical property data. Here, the study of commercial Ti-alloy wires is considered wherein to overcome this limitation, the formulation of the Kocks–Mecking (K–M) model is modified to provide a parameter cb that characterizes the microstructural scale responsible for the observed plasticity and work hardening behavior. The softening factor cb is found to be independent of strain-rate for the Ti-alloy wires of this study. It is proposed that cb !can offer a versatile and complementary computation to the activation volume υ* since its formulation includes the yield and ultimate strength values along with the plastic strain. For the tensile testing of Ti-alloy wires, a low cb-value of 14 is calculated for Ti-6Al-4V that is consistent with >10 % plasticity during work hardening whereas a high cb-value of 135 for Ti-6Al-7Nb corresponds with <4 % plasticity.

Research Organization:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1575255
Report Number(s):
SAND-2019-13934J; 681449; TRN: US2001219
Journal Information:
International Journal of Materials Research, Vol. 110, Issue 11; ISSN 1862-5282
Publisher:
Carl Hanser Verlag GmbH & Co. KGCopyright Statement
Country of Publication:
United States
Language:
English

References (43)

A study of the microstructure and hardness of two titanium alloys: Commercially pure and Ti–6Al–4V journal November 2009
Surface treatments of titanium dental implants for rapid osseointegration journal July 2007
Commercially pure titanium Steinhäuser plate-screw system for maxillofacial surgery journal July 1988
Effect of mechanical surface pretreatment on metal ion release journal February 2000
Investigation of reactions to dental materials: Investigation of reactions to dental materials journal August 2005
RETRACTED ARTICLE: An evaluation of the potential consequences of drilling titanium and tantalum implants during surgery - a pilot study journal November 2017
Improvement of the Oxidation and Wear Resistance of Pure Ti by Laser-Cladding Ti3Al Coating at Elevated Temperature journal February 2011
Modular titanium alloy neck adapter failures in hip replacement - failure mode analysis and influence of implant material journal January 2010
Biocompatibility and osteogenesis of refractory metal implants, titanium, hafnium, niobium, tantalum and rhenium journal June 2001
Biocompatibility of β-stabilizing elements of titanium alloys journal November 2004
Titanium-Aluminium-Niobium Alloy, Development for Biocompatible, High Strength Surgical Implants - Titan-Aluminium-Niob-Legierung, entwickelt für körperverträgliche, hochfeste Implantate in der Chirurgie journal January 1985
Strain hardening of titanium: role of deformation twinning journal August 2003
The high-strain-rate response of alpha-titanium: experiments, deformation mechanisms and modeling journal January 1998
Tensile testing of bone over a wide range of strain rates: effects of strain rate, microstructure and density journal November 1976
In vitro corrosion of titanium journal August 1998
Kinetics of flow and strain-hardening journal November 1981
Applicability of the one-internal-variable Kocks–Mecking approach for tensile flow and work hardening behaviour of modified 9Cr–1Mo steel journal July 2013
Devising Strain Hardening Models Using Kocks–Mecking Plots—A Comparison of Model Development for Titanium Aluminides and Case Hardening Steel journal August 2016
The Nature and Consequences of Coherent Transformations in Steel. journal January 2003
Comments on the Microstructure and Properties of Ultrafine Grained Steel journal January 2008
Microstructural changes in equal channel angular pressed low carbon steel by static annealing journal July 2000
Thermomechanical processing of advanced high strength steels journal May 2018
Thermal activation under shear journal May 2001
Microstructural evolution and formation mechanism of FCC titanium hydride in Ti–6Al–4V–xH alloys journal January 2007
Metallurgical analysis and nanoindentation characterization of Ti–6Al–4V workpiece and chips in high-throughput drilling journal January 2008
Osteoblast Cell Response on the Ti6Al4V Alloy Heat-Treated journal April 2017
Development of methods for the quantification of microstructural features in α+β-processed α/β titanium alloys journal May 2009
Direct observations of rapid diffusion of Cu in Au thin films using in situ x-ray diffraction
  • Elmer, J. W.; Palmer, T. A.; Specht, E. D.
  • Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 24, Issue 4 https://doi.org/10.1116/1.2204926
journal July 2006
Kinetics of thermal decomposition of titanium hydride powder using in situ high-temperature X-ray diffraction (HTXRD) journal September 2005
Thermal Stability of α Phase of Titanium by Using X-Ray Diffraction journal September 2010
Microstructural characterization of Ti-6Al-7Nb alloy after severe plastic deformation journal August 2012
Comparison of residual strains measured by X-ray and neutron diffraction in a titanium (Ti–6Al–4V) matrix composite journal January 1999
Formation and control of martensite in Ti-6Al-4V alloy produced by selective laser melting journal October 2016
Effect of 0.770wt%H addition on the microstructure of Ti–6Al–4V alloy and mechanism of δ hydride formation journal July 2009
Phase stabilities of fcc Ti nanocrystals journal December 2004
Synthesis and properties of thermosensitive poly(N-isopropylacrylamide-co-methyl methacrylate) hydrogel with rapid response journal January 2002
In situ TEM observation of FCC Ti formation at elevated temperatures journal November 2017
Rolling-induced Face Centered Cubic Titanium in Hexagonal Close Packed Titanium at Room Temperature journal April 2016
Time-dependent deformation of metals journal December 1985
Work-hardening stages and deformation mechanism maps during tensile deformation of commercially pure titanium journal August 2013
Improvement of mechanical behaviors of a superlight Mg-Li base alloy by duplex phases and fine precipitates journal February 2018
Development and application of constitutive equations for the multiple-stand hot rolling of Al-alloys journal April 2002
Work hardening model based on multiple dislocation densities journal July 2005

Cited By (1)

Constitutive structural parameter c b for the work‐hardening behavior of laser powder‐bed fusion, additively manufactured 316L stainless steel journal January 2020

Similar Records

Strain-rate sensitivity of strength dependence on the softening factor cb in Ti-alloy wires
Journal Article · Sun Oct 01 00:00:00 EDT 2017 · Proposed Journal Article, unpublished · OSTI ID:1575255
A constitutive structural parameter cb for the work hardening behavior of additively manufactured Ti-6Al-4V
Journal Article · Wed Jul 21 00:00:00 EDT 2021 · Material Design & Processing Communications · OSTI ID:1575255
A Constitutive Structural Parameter for the Work Hardening Behavior of Additively Manufactured Ti-6Al-4V
Technical Report · Sat May 01 00:00:00 EDT 2021 · OSTI ID:1575255

Related Subjects

36 MATERIALS SCIENCE
Softening factor
Work hardening
Plastic strain
Ti alloys