TITLE

Low-density open-cell foams in the NiTi system

AUTHOR(S)
Grummon, David S.; Shaw, John A.; Gremillet, Antoine
PUB. DATE
April 2003
SOURCE
Applied Physics Letters;4/21/2003, Vol. 82 Issue 16, p2727
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
It is shown that open-cell metallic foams having very low density, and that display martensite transformations required for shape memory and superelastic behavior, can be fabricated using a powder-metallurgy technique. Results are presented on experiments in which a polymeric precursor foam was coated with an equiatomic NiTi powder slurry and subsequently sintered to yield foams with relative densities as low as 0.039. Although contaminated with interstitial impurities, they displayed unambiguous calorimetric signature of the B2 → B19' transformation. The results are of considerable significance to potential applications requiring ultralightweight structures with the unusual dissipative and strain-recovery properties of NiTi shape-memory materials.
ACCESSION #
9518357

 

Related Articles

  • Functional Characterization of Shape Memory CuZnAl Open-Cell Foams by Molten Metal Infiltration. Arnaboldi, S.; Bassani, P.; Passaretti, F.; Redaelli, A.; Tuissi, A. // Journal of Materials Engineering & Performance;Jun2011, Vol. 20 Issue 4/5, p544 

    In the recent years, the research for novel materials with tailored mechanical properties, as well as functional properties, has encouraged the study of porous and cellular materials. Our previous work proposed and reported about the possibility to manufacture open-cell metal foams of CuZnAl...

  • Giant magnetostriction in an ordered Fe[sub 3]Pt single crystal exhibiting a martensitic transformation. Kakeshita, Tomoyuki; Takeuchi, Tetsuya; Fukuda, Takashi; Tsujiguchi, Masato; Saburi, Toshio; Oshima, Ryuichiro; Muto, Shunsuke // Applied Physics Letters;9/4/2000, Vol. 77 Issue 10 

    Magnetostriction measurements have been made in an ordered Fe[sub 3]Pt single crystal with degree of order of about 0.8, which exhibits a cubic-tetragonal martensitic transformation at 97 K. The specimen was cooled down to 4.2 K without magnetic field, and then a magnetic field of 4 T is applied...

  • The Effect of Prestressing on the Fracture Toughness of ZrO[sub 2]—(3,4) mol % Y[sub 2]O[sub 3] Ceramics. Akimov, G. Ya.; Timchenko, V. M. // Technical Physics;Jan2001, Vol. 46 Issue 1, p125 

    It is shown that the fracture toughness of prestressed ZrO[sub 2]-(3, 4) mol % Y[sub 2]O[sub 3] ceramics monotonically increases, the growth being as high as ∼50% of the initial value. It is believed that prestressing causes slow isothermal martensite transformation of some grains in the...

  • Quantitative analysis of acoustic emission signals. Yu, Zhen-zhong; Clapp, Philip C. // Journal of Applied Physics;9/15/1987, Vol. 62 Issue 6, p2212 

    Proposes a quantitative approach to estimating acoustic emission (AE) source parameters with proper care taken of the frequency-dependent media attenuation. Information on AE; Significance of media attenuation; Details on the proposed approach; Application to martensitic transformation.

  • Study of thermoelastic growth during martensitic transformations. Planes, Antoni; Ortín, Jordi // Journal of Applied Physics;1/15/1992, Vol. 71 Issue 2, p950 

    Studies the thermoelastic growth during martensitic transformations. Structural transitions of several body-centered cubic metals metallic alloy systems; Local thermoelastic equilibrium; Evolution in thermoplastic equilibrium.

  • Thermal stability of field-forced and field-assisted antiferroelectric-ferroelectric phase transformations in Pb(Zr,Sn,Ti)O3. Yang, Pin; Payne, David A. // Journal of Applied Physics;2/1/1992, Vol. 71 Issue 3, p1361 

    Presents a study that developed a martensitic-type approach to explain the observed thermal hysteresis and field-induced transformation behavior. Description of the model; Experimental method; Results and discussion.

  • Intermartensitic transformation and magnetic-field-induced strain in Ni[sub 52]Mn[sub 24.5]Ga[sub 23.5] single crystals. Wang, W. H.; Wu, G. H.; Chen, J. L.; Gao, S. X.; Zhan, W. S.; Wen, G. H.; Zhang, X. X. // Applied Physics Letters;8/20/2001, Vol. 79 Issue 8, p1148 

    We have found a complete thermoelastic intermartensitic transformation between modulated and unmodulated martensite in single-crystal Ni[sub 52]Mn[sub 24.5]Ga[sub 23.5]. This intermartensitic transformation provides a much larger strain than that of the martensitic transformation. A giant...

  • Electronic and structural properties of Fe[sub 3]Pd–Pt ferromagnetic shape memory alloys. Stern, R. A.; Willoughby, S. D.; Ramirez, A.; MacLaren, J. M.; Cui, J.; Pan, Q.; James, R. D. // Journal of Applied Physics;5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7818 

    Ferromagnetic shape memory (FSM) alloys are scientifically and technologically interesting materials that combine ferromagnetism with a reversible martensitic phase transformation. Fe[sub 70]Pd[sub 30] has recently been shown to display a FSM effect at usable temperatures and low fields....

  • Model for strain and magnetization in magnetic shape-memory alloys. O'Handley, R.C. // Journal of Applied Physics;3/15/1998, Vol. 83 Issue 6, p3263 

    Presents information pertaining to the observation of the large magnetic-field-induced strains in the martensitic phases. What the dependence of strain on magnetization generally shows; Information on the physical characteristics of certain alloys; Representation of the observed strains.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics