Martensite transformation in NiTi alloys induced by tensile stress pulses

Conference · Sat Dec 31 23:00:00 EST 1988

OSTI ID:5671981

Thakur, A M; Thadhani, N N; Schwarz, R B ^[1]

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1. New Mexico Inst. of Mining and Technology, Socorro, NM (USA). Center for Explosives Technology Research

It is shown that tensile stress pulses generated by the reflection of compressive shock waves at a free surface induce martensitic transformation (from B2-CsCl to monoclinic structure), in equiatomic NiTi alloys. The transformation products are in the form of acicular needles with a micro-twined or dislocation substructure. 6 refs., 5 figs., 2 tabs.

• Research Organization: Los Alamos National Lab., NM (USA)
• Sponsoring Organization: DOE/MA
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5671981
• Report Number(s): LA-UR-89-3105; CONF-890812--51; ON: DE90001832
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CARBON ADDITIONS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
GRAIN SIZE
IRON ALLOYS
MARTENSITE
MICROSTRUCTURE
NICKEL ALLOYS
NICKEL BASE ALLOYS
PHASE TRANSFORMATIONS
PULSES
SCATTERING
SHOCK WAVES
SIZE
TITANIUM ALLOYS
X-RAY DIFFRACTION