We measure the local yield stress, at the scale of small atomic regions, in a deeply quenched two-dimensional glass model undergoing shear banding in response to athermal quasistatic (AQS) deformation. We find that the occurrence of essentially a single plastic event suffices to bring the local yield stress distribution to a well-defined value for all strain orientations, thus essentially erasing the memory of the initial structure. It follows that in a well-relaxed sample, plastic events cause the abrupt (nucleation-like) emergence of a local softness contrast and thus precipitate the formation of a band, which, in its early stages, is measurably softer than the steady-state flow. Moreover, this postevent yield stress ensemble presents a mean value comparable to that of the inherent states of a supercooled liquid around the mode-coupling temperature $T_{\rm MCT}$. This, we argue, explains that the transition between brittle and ductile yielding in amorphous materials occurs around a comparable parent temperature. Our data also permit to capture quantitatively the contributions of pressure and density changes and demonstrate unambiguously that they are negligible compared with the changes of softness caused by structural rejuvenation.
Shear Banding in Amorphous Solids as a Nonlinear Screened Soft Mode Instability
Hangzhou International Innovation Institute, Beihang University（北京航空航天大学杭州创新研究院）；Institute of Theoretical Physics, Chinese Academy of Sciences（中国科学院理论物理研究所）；School of Physical Sciences, University of Chinese Academy of Sciences（中国科学院大学物理科学学院）；Sino-Europe Complex Science Center, School of Mathematics, North University of China（中北大学数学学院中欧复杂科学中心）；Department of Chemical Physics, the Weizmann Institute of Science（魏茨曼科学研究所化学物理系）
Universal Dynamic Scaling for Sub-Yield Aging and Over-Yield Rejuvenation in A Cyclically Driven Metallic Glass
School of Materials Science and Engineering, Anhui University of Technology（安徽工业大学材料科学与工程学院）；Advanced Interdisciplinary Science Research Center (AiRCenter), Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences（中国科学院宁波材料技术与工程研究所先进交叉科学研究院）；State Key Laboratory of High Performance Roll Materials and Composite Forming, School of Material Science and Engineering, Hebei University of Technology（河北工业大学材料科学与工程学院高性能轧辊材料及复合成形省部共建国家重点实验室培育基地）
University of California, Irvine（加州大学尔湾分校）；University of California, Santa Barbara（加州大学圣塔芭芭拉分校）；Los Alamos National Laboratory（洛斯阿拉莫斯国家实验室）；Sandia National Laboratories（桑迪亚国家实验室）；Johns Hopkins University（约翰斯·霍普金斯大学）
Impact of severe plastic deformation on the relaxation of glassy and supercooled liquid states of amorphous Pd$_{40}$Ni$_{40}$P$_{20}$
采用差示扫描量热法、低温热容法和波动电子显微镜相结合的方法研究了高压扭转引起的剧烈塑性形变对Pd $_{40}$ Ni $_{40}$ P $_{20}$玻璃态和过冷液体态弛豫的影响。由于变形和随后的热处理的量热信号的变化进行了分析和变形（复兴）和退火（松弛）之间的相关性被发现在中程秩序（MRO）。此外，在过冷液体状态下的放热峰的发生与MRO类型的特定变化之间的耦合被确定。这些研究结果被理解在一个潜在的能源景观计划提供了一种新的方法，MRO工程的眼镜。
Continuum modeling of Soft Glassy Materials under shear
Università di Roma “Tor Vergata”（罗马托尔维尔加塔大学）；ENSL, CNRS, Laboratoire de physique（里昂高等师范学校，法国国家科学研究中心，物理实验室）；Univ. de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière（里昂大学，克莱贝尔·伯纳德里昂第一大学，法国国家科学研究中心，光物质研究所）；Institut Universitaire de France (IUF)（法兰西学院）；Eindhoven University of Technology（埃因霍温理工大学）；CNR-IAC（意大利国家研究委员会应用化学研究所）
