The effect of hydrogen on the multiaxial stress-strain behavior of titanium tubing

Journal Article · Thu Dec 01 04:00:00 EST 1983 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02668894· OSTI ID:6551911

Lentz, C W; Hecker, S S; Koss, D A; Stout, M G

The influence of internal hydrogen on the multiaxial stress-strain behavior of commercially pure titanium has been studied. Thin-walled specimens containing either 20 or 1070 ppm hydrogen were tested at constant stress ratios in combined tension and internal pressure. Hydrogen lowers the yield strength but has no significant effect on strain hardening behavior at strains epsilon greater than or equal to 0.02. Thus, hydrogen embrittlement under plain strain or equibiaxial loading is not a consequence of changes of flow behavior. The yielding behavior is described well by Hill's quadratic yield criterion. As measured mechanically and pole figure analysis, the plastic anisotropy changes with deformation in a manner which depends on stress state. A strain dependent, texture-induced strengthening effect in equibiaxial tension an enhanced strain hardening rate.

• Research Organization: Michigan Technological University, Houghton, MI
• OSTI ID: 6551911
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 14A:12; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ANISOTROPY
CALCULATION METHODS
DEFORMATION
ELEMENTS
EMBRITTLEMENT
HARDENING
HYDROGEN
HYDROGEN EMBRITTLEMENT
MECHANICAL PROPERTIES
METALS
MORPHOLOGICAL CHANGES
NONMETALS
PLASTICITY
QUANTITY RATIO
RHEOLOGY
STRAIN HARDENING
STRAINS
STRESS ANALYSIS
STRESSES
TITANIUM
TRANSITION ELEMENTS
TUBES
YIELD STRENGTH