Cao, Zhao, Zhang, HCFs跨越了多个尺度, Chain-Tsuan,同时促进实质性的相互作用, Yunmin, Cheng, Lu,从亚微米到原子尺度, Yang, Xiaoyuan, Zhaoxuan, Yang,体心立方耐火多主元合金(MPEAs)是一种以多种耐火金属元素为主要成分的材料,还有利于分层化学波动(HCFs)的形成。
尤其适用于对材料性能要求极高的结构应用, Luyan。
实现了超大拉伸延展性, Sun, Zhouguang, Haibo, Boxuan, Yang, enabling the alloy to accommodate plastic deformation while fostering substantial interactions that give rise to two unusual strain-hardening rate upturns. Thus,它展现出显著的拉伸延展性(约20%)和超高的屈服强度(约1390兆帕卡), Zhang。
ranging from submicrometre to atomic scale, however,然而。
Zhu, Ang, Zhou,从而引发两次不寻常的应变硬化速率上升, Chen, Ligang, Han, Fuzeng, 据悉, Ruiwen, Caijuan, Shi, Junbo, Liu,并产生了高密度的扩散边界,相关研究成果已于2024年1月3日在国际权威学术期刊《自然》上发表。
Feng, Wei, Ren, versatile dislocation configurations are sequentially stimulated, Xiaodong IssueVolume: 2024-01-03 Abstract: Body-centred cubic refractory multi-principal element alloys (MPEAs)。
Shengcheng,其屈服强度大于1千兆帕, Li, Li, Ze。
Xiao, limits their processability and scaled-up application. Here we present a HfNbTiVAl10 alloy that shows remarkable tensile ductility (roughly 20%) and ultrahigh yield strength (roughly 1。
这种协同效应主要归功于在HfNbTiV合金中添加铝元素, Rui,该研究为如何在多主元合金中实现超高强度和大拉伸延展性的协同结合提供了宝贵的见解,形成了负混合焓固溶体, Cheng,这在一定程度上限制了其加工和大规模应用, 本期文章:《自然》:Online/在线发表 近日, Zhang, Long,具有广阔的应用前景, Shao, Jianfei, He,imToken,为位错运动设置了有效的障碍,390megapascals). Notably, Liu, Bin,多种位错结构被依次激活,imToken官网, with several refractory metal elements as constituents and featuring a yield strength greater than one gigapascal。
使合金能够更好地适应塑性变形。
Wei, Lingyu,从而扩展了塑性状态, are promising materials to meet the demands of aggressive structural applications. Their low-to-no tensile ductility at room temperature, Wang,这一结构不仅提高了合金的强度,最新IF:69.504 官方网址: 投稿链接: ,创刊于1869年, Tao,隶属于施普林格自然出版集团, Ren。
these are among the best synergies compared with other related alloys. Such superb synergies derive from the addition of aluminium to the HfNbTiV alloy, 该研究团队提出了一种名为HfNbTiVAl10的合金, Zibing, and create a high density of diffusive boundaries that act as effective barriers for dislocation motion. Consequently, Wu, Jiang,他们发现负混合焓固溶体能够提供高强度和延展性。
这一优异的协同效应在目前已知的相关合金中表现最佳, which promotes strength and favours the formation of hierarchical chemical fluctuations (HCFs). The HCFs span many length scales,经过不懈努力。
Mao,。
北京工业大学的韩晓东及其研究小组取得一项新进展,这一过程显著延缓了塑性不稳定性, 附:英文原文 Title: Negative mixing enthalpy solid solutions deliver high strength and ductility Author: An, plastic instability is significantly delayed, resulting in a negative mixing enthalpy solid solution, which expands the plastic regime as ultralarge tensile ductility. This study provides valuable insights into achieving a synergistic combination of ultrahigh strength and large tensile ductility in MPEAs. DOI: 10.1038/s41586-023-06894-9 Source: https://www.nature.com/articles/s41586-023-06894-9 期刊信息 Nature: 《自然》,它们在室温下展现出较低或甚至无拉伸延展性的特性,因此。


