Orientation dependence of damping behavior in a Mn-Cu shape memory alloy. (September 2019)

• Record Type: Journal Article
• Authors: Zuo, Shungui; Xiao, Fei; Fukuda, Takashi
• Is Part Of: Scripta materialia. Number 170(2019)
• Page Start: 95
• Page End: 98
• Publication Date: 2019-09
• Subjects: Manganese‑copper -- Shape memory alloy -- Internal friction -- Damping -- Martensitic transformation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.05.042
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Internal friction of a Mn-11Cu (at.%) alloy was studied in the main [001], [011] and [111] crystallographic directions by applying tensile stress. Two internal friction peaks were observed in three directions. One is twin boundary-related relaxation peak (in the temperature range of 200–300 K), which is highest in the [001] direction and lowest in the [111] direction. Other is associated with reverse martensitic transformation (~430 K), and its orientation dependence is small. The orientation dependence of the twin boundary-related internal friction peak is discussed based on the Schmid factor for the movement of {011} twin boundaries. Graphical abstract: Unlabelled Image