Fe-SMA的材料特性及在土木工程中的应用进展  

Material Properties of Fe-SMA and Its Application in Civil Engineering

作　　者：张哲熹 方成 王伟[1,2] 陈以一[1,2] ZHANG Zhexi;FANG Cheng;WANG Wei;CHEN Yiyi(State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092 [2]同济大学建筑工程系,上海200092

出　　处：《防灾减灾工程学报》2022年第2期411-424,共14页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(51778456,52078359)资助。

摘　　要：铁基形状记忆合金(Fe-SMA)拥有可靠的形状记忆效应及优异的抗低周疲劳性能,在土木工程领域具有较为广阔的应用前景。材料特性方面,重点介绍Fe-SMA形状记忆效应及应力作用下亚结构层面相变机理,在此基础上阐述单调及循环加载下Fe-SMA的力学性能;工程应用方面,对Fe-SMA的主要应用范围及相应关键技术进行总结,详细回顾Fe-SMA构件的构造形式、工作机理和力学性态,对不同技术实施方案的特点、优势和潜在不足进行评述。指出需进一步明确Fe-SMA阻尼构件的耗能破坏模式、变形相容条件和恢复力机制,建立损伤可控的Fe-SMA耗能元组件结构体系设计方法。Iron-based shape memory alloys(SMAs)are materials that have shape-memory effect as well as outstanding low-cycle fatigue resistance,leading to a broad application prospect in civil engineering. This paper presents the fundamentals of the martensitic transformation of Fe-SMA and some key properties,such as corrosion resistance,weldability and mechanical properties under monotonic or cyclic loading. This is followed by a description of their practical applications like structural reinforcement and seismic dampers. In terms of engineering application,the main application scope and corresponding key technologies of Fe-SMA are summarized,and the structural form,working mechanism and mechanical properties of Fe-SMA components are especially reviewed. The characteristics,advantages and potential disadvantages of different technical implementation schemes are commented.It is mentioned that the energy dissipation failure mode,deformation compatibility and restoring force mechanism of Fe-SMA damping members need to be further clarified,and complete design principle of damage-controllable Fe-SMA-based structure system needs to be established.

关 键 词：铁基形状记忆合金 形状记忆效应 马氏体相变 预应力加固 低周疲劳 阻尼器 

分 类 号：TB381[一般工业技术—材料科学与工程] TU511.3[建筑科学—建筑技术科学]