Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 9, No. 34 (2015)

Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior

Author and affiliation details
  • Vittorio Di Cocco Corresponding author v.dicocco@unicas.it
  • Francesco Iacoviello
  • Stefano Natali
  • Andrea Brotzu
DOI
10.3221/IGF-ESIS.34.46
Published
Published inVol. 9, No. 34 (2015)Go to the issue

Abstract

Shape memory property characterizes the behavior of many Ti based and Cu based alloys (SMAs).
In Cu-Zn-Al SMAs, the original shape recovering is due to a bcc phase that is stable at high temperature. After
an appropriate cooling process, this phase (?-phase or austenitic phase) transforms reversibly into a B2 structure (transition phase) and, after a further cooling process or a plastic deformation, it transforms into a DO3 phase (martensitic phase). In ?-Cu-Zn-Al SMAs, the martensitic transformation due to plastic deformation is not stable at room temperature: a high temperature “austenitization” process followed by a high speed cooling process allow to obtain a martensitic phase with a higher stability.
In this work, a Cu-Zn-Al SMA in “as cast” conditions has been microstructurally and metallographically
characterized by means of X-Ray diffraction and Light Optical Microscope (LOM) observations. Fatigue crack
propagation resistance and damaging micromechanisms have been investigated corresponding to three different load ratios (R=0.10, 0.50 and 0.75).

Keywords

Article history

  1. ReceivedUntil the next stage: 0 days
  2. AcceptedUntil the next stage: 0 days
  3. Published

How to cite

APA

Di Cocco, V., Iacoviello, F., Natali, S., & Brotzu, A. (2015). Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior. Fracture and Structural Integrity, 9(34). https://doi.org/10.3221/IGF-ESIS.34.46

IEEE

V. Di Cocco, F. Iacoviello, S. Natali, and A. Brotzu, “Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior,” Fracture and Structural Integrity, vol. 9, no. 34, 2015, doi: 10.3221/IGF-ESIS.34.46.

MLA

Di Cocco, Vittorio, et al. “Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior.” Fracture and Structural Integrity, vol. 9, no. 34, 2015. https://doi.org/10.3221/IGF-ESIS.34.46.

Chicago

Di Cocco, Vittorio, Francesco Iacoviello, Stefano Natali, and Andrea Brotzu. 2015. “Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior.” Fracture and Structural Integrity 9 (34). https://doi.org/10.3221/IGF-ESIS.34.46.

Harvard

Di Cocco, V., Iacoviello, F., Natali, S. and Brotzu, A. (2015) ‘Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior’, Fracture and Structural Integrity, 9(34). doi: 10.3221/IGF-ESIS.34.46.

Vancouver

Di Cocco V, Iacoviello F, Natali S, Brotzu A. Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior. Fracture and Structural Integrity. 2015;9(34). doi:10.3221/IGF-ESIS.34.46

BibTeX

@article{dicocco2015, author = {Di Cocco, Vittorio and Iacoviello, Francesco and Natali, Stefano and Brotzu, Andrea}, title = {Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior}, journal = {Fracture and Structural Integrity}, year = {2015}, volume = {9}, number = {34}, doi = {10.3221/IGF-ESIS.34.46}, url = {https://doi.org/10.3221/IGF-ESIS.34.46}, issn = {1971-8993} }

RIS

TY - JOUR AU - Di Cocco, Vittorio AU - Iacoviello, Francesco AU - Natali, Stefano AU - Brotzu, Andrea TI - Fatigue crack micromechanisms in a Cu-Zn-Al shape memory alloy with pseudo-elastic behavior JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2015 DA - 2015/09/28 VL - 9 IS - 34 DO - 10.3221/IGF-ESIS.34.46 UR - https://doi.org/10.3221/IGF-ESIS.34.46 SN - 1971-8993 ER -

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