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Title: Deformation behavior of HCP titanium alloy: Experiment and Crystal plasticity modeling

Journal Article · · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
 [1];  [2];  [2];  [2];  [1];  [2]
  1. AGH - Univ. of Science and Technology, Krakow (Poland). Faculty of Physics and Applied Computer Science
  2. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Materials Science and Technology Division

The deformation behavior of commercially pure titanium is studied using experiments and a crystal plasticity model. Compression tests along the rolling, transverse, and normal-directions, and tensile tests along the rolling and transverse directions are performed at room temperature to study the activation of slip and twinning in the hexagonal closed packed titanium. A detailed EBSD based statistical analysis of the microstructure is performed to develop statistics of both {10-12} tensile and {11-22} compression twins. A simple Monte Carlo (MC) twin variant selection criterion is proposed within the framework of the visco-plastic self-consistent (VPSC) model with a dislocation density (DD) based law used to describe dislocation hardening. In the model, plasticity is accommodated by prismatic, basal and pyramidal slip modes, and {10-12} tensile and {11-22} compression twinning modes. Thus, the VPSC-MC model successfully captures the experimentally observed activation of low Schmid factor twin variants for both tensile and compression twins modes. The model also predicts macroscopic stress-strain response, texture evolution and twin volume fraction that are in agreement with experimental observations.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); Polish National Science Centre (NCN); Ministry of Science and Higher Education (Poland)
Grant/Contract Number:
AC52-06NA25396; FWP-06SCPE401; DEC-2015/19/D/ST8/00818
OSTI ID:
1432623
Report Number(s):
LA-UR-17-29636
Journal Information:
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Vol. 724, Issue C
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 46 works
Citation information provided by
Web of Science

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Cited By (3)

Investigation of strengthening mechanism of commercially pure titanium joints fabricated by autogenously laser beam welding and laser-MIG hybrid welding processes journal November 2018
Extension of the visco-plastic self-consistent model to account for elasto-visco-plastic behavior using a perturbed visco-plastic approach journal October 2019
Deformation twinning and grain partitioning in a hexagonal close-packed magnesium alloy journal November 2018

Figures / Tables (10)