间隙强化FeMnCoCr亚稳高熵合金及其低温/临氢服役性能研究进展
Progress in study of FeMnCoCr matestable high-entropy alloy toughening pathways and service performance under hydrogen environment at cryogenic temperature
耿赵文 1李湘龙 2柏春燕 3罗晋如 3宋淼 2陈超 2周科朝2
作者信息
- 1. 苏州实验室,苏州 215004;中南大学 粉末冶金研究院,长沙 410083
- 2. 中南大学 粉末冶金研究院,长沙 410083
- 3. 苏州实验室,苏州 215004
- 折叠
摘要
以马氏体/孪晶相变为主要变形机制的FeMnCoCr系亚稳高熵合金以其优异的综合力学性能,倍受结构材料研究领域的关注,在氢能储运、吸能保护和深空深海等领域极具应用潜力,尤其是深低温/临氢等复杂服役场景增多,复杂的场景对金属结构材料提出了更严苛的性能要求.非金属元素间隙/置换强化是进一步提升该体系力学性能的主要手段,马氏体相变诱导塑性变形机制和多种复杂界面结构为拓展其在低温/临氢环境服役带来可能.本文围绕显微组织、精细结构和力学性能的最新研究进展,首先概述了近年来FeMnCoCr亚稳高熵合金发展动态,然后总结了几类常用非金属元素间隙/置换亚稳高熵合金调控方法和强化机理,最后概括了FeMnCoCr系亚稳高熵合金在低温/临氢服役环境中的影响机制,并展望了FeMnCoCr系亚稳高熵合金未来的研究方向和发展趋势.
Abstract
FeMnCoCr metastable high-entropy alloys using martensite/twins as the main deformation mechanism have attracted much attention in the field of structural materials research due to their excellent comprehensive mechanical properties,they have great potential for application in the fields of hydrogen energy storage and transportation,energy-absorbing protection and deep space or sea,etc.In particular,the increase of complex service scenarios,for example deep cryogenic/hydrogen proximity,has put forward more stringent performance requirements for metallic structural materials.The gap/replacement strengthening of non-metallic elements is the main mean to further improve the mechanical properties of this system.The martensitic phase transformation-induced plastic deformation mechanism and multiple complex interfacial structures bring the possibility of expanding its service in cryogenic/hydrogen-critical environments.This review focuses on the latest research progress on the microstructure,fine structure and mechanical properties.Firstly,it outlines the development of FeMnCoCr metastable high-entropy alloys in recent years,and summarizes several types of commonly used non-metallic elements interstitial/replacement metastable high-entropy alloys regulation methods and strengthening mechanisms,then summarizes the influence mechanism of FeMnCoCr metastable high-entropy alloys in the low-temperature/hydrogen-critical service environments,and finally looks ahead to the future research direction and development trend of FeMnCoCr metastable high-entropy alloys.The research direction and development trend of FeMnCoCr metastable high-entropy alloys are also anticipated.
关键词
亚稳高熵合金/间隙强化/孪生/相变诱导塑性/低温/氢脆Key words
metastable high-entropy alloys/interstitial strengthening/twinning/transformation induced plasticity/cryogenic/hydrogen embrittlement引用本文复制引用
基金项目
国家自然科学基金(52271046)
湖南省自然科学基金(2022JJ20061)
出版年
2024
NETL
NSTL
万方数据