Relationships between original microstructure and shape memory effect in an Fe-14Mn-5Si-9Cr-5Ni alloy

Journal Article · Thu Oct 01 04:00:00 EDT 1998 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(98)00141-X· OSTI ID:655378

Zhao, C ^[1]

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1. Xiian Jiaotong Univ., Shaanxi (China). School of Materials Science and Engineering

The shape memory effect in an Fe-14Mn-5Si-9Cr-5Ni alloy with different original microstructures was studied by transmission electron microscopy (TEM) observations and X-ray diffraction (XRD) analysis. By using a series of heat treatments, dislocation tangles, dislocation pile-up, second phase precipitation, segregation of the alloy atoms, and {alpha}{prime}-martensite were introduced into the original microstructures, to strengthen the parent phase austenite. With the strengthening of the matrix, the irreversible plastic deformation in austenite during prestrain was put back, which resulted in a significant improvement of the shape memory effect (SME).

• OSTI ID: 655378
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 10 Vol. 33; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM ALLOYS
DISLOCATIONS
ELECTRON MICROSCOPY
IRON BASE ALLOYS
MANGANESE ALLOYS
MICROSTRUCTURE
NICKEL ALLOYS
SHAPE MEMORY EFFECT
SILICON ALLOYS
X-RAY DIFFRACTION