Work

Effect of deformation treatment on corrosion properties of Fe-Mn-Si shape memory alloys

Year: 2025

Type: article

Abstract: This study examines the corrosion response and microstructural evolution of Fe-15.5Mn-5.5Si-8.2Cr-5.5Ni shape memory alloy subjected to varying pre-deformation levels. Experimental findings reveal that pre-strain promotes stress-induced transformation of austenite into ε-martensite, which nucleates preferentially at austenite grain boundaries. A significant rise in dislocation density is observed near grain boundaries and phase interfaces, contributing to localized corrosion. As a result, the alloy exhibits increased susceptibility to corrosion with greater pre-deformation, demonstrating a clear deterioration in overall corrosion resistance.

Source: International Journal of Electrochemical Science

DOI: 10.1016/j.ijoes.2025.101263

Authors: Li Xinmei, Li Zhiming, Suo Shuai, Xue Tianxiang, Li Wen, Guo Fuqiang

Institutions: State Grid Corporation of China (China), State Grid Shandong Electric Power Company (China), Shandong University

Language: English

Topic: Shape Memory Alloy Transformations

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,670

Funder: Doctoral Foundation of Shandong Province