Mechanical properties articles within Nature

Featured

  • Article |

    We successfully rebuild an approximate void-free additive manufacturing microstructure in Ti-6Al-4V titanium alloy by the development of a void-free additive manufacturing processing technique through an understanding of the asynchronism of phase transformation and grain growth.

    • Zhan Qu
    • , Zhenjun Zhang
    •  & Zhefeng Zhang

  • Article
    | Open Access

    A bulk ceramic composed of interlocked boron nitride nanoplates with a laminated structure of twist-stacked nanoslices is created using hot-pressing and spark plasma sintering, which exhibits large elastic and plastic deformability and high strength at room temperature.

    • Yingju Wu
    • , Yang Zhang
    •  & Yongjun Tian

  • Article |

    A HfNbTiVAl10 alloy shows tensile ductility and ultrahigh yield strength from the addition of aluminium to a HfNbTiV alloy, resulting in a negative mixing enthalpy solid solution, which promotes strength and favours formation of hierarchical chemical fluctuations.

    • Zibing An
    • , Ang Li
    •  & Xiaodong Han

  • Article |

    We report atomic observations of six incoherent twin boundary configurations and structural transitions in diamond at room temperature, showing a dislocation-mediated mechanism different from metallic systems and shedding new light on grain boundary behaviour.

    • Ke Tong
    • , Xiang Zhang
    •  & Yongjun Tian

  • Article |

    A high-throughput, non-contact framework is described that uses the laser-induced vibrational signatures of metamaterials to non-destructively quantify their omnidirectional elastic information, dynamic linear properties, damping properties and defects.

    • Yun Kai
    • , Somayajulu Dhulipala
    •  & Carlos M. Portela

  • Article |

    To demonstrate the power of multistability, a specific class of groovy metasheets is introduced as a new shape-morphing platform that allows repeated switching from the flat state to multiple, precisely selected and stable three-dimensional shapes.

    • A. S. Meeussen
    •  & M. van Hecke

  • Article
    | Open Access

    A straightforward strategy for preparing lignin-based wood adhesives from lignocellulosic biomass is described, with the resulting adhesives demonstrating performance attractive for plywood manufacture.

    • Guangxu Yang
    • , Zhenggang Gong
    •  & Li Shuai

  • Article |

    We report that fatigue cracks in pure metals can undergo intrinsic self-healing; they were observed to heal by crack flank cold welding induced by local stress state and grain boundary migration.

    • Christopher M. Barr
    • , Ta Duong
    •  & Brad L. Boyce

  • Article
    | Open Access

    Combining alloy design with additive manufacturing process design creates α–β titanium–oxygen–iron alloys that are both strong and ductile, with the potential to revitalize off-grade sponge titanium and thereby reduce the carbon footprint of the titanium industry.

    • Tingting Song
    • , Zibin Chen
    •  & Ma Qian

  • Article |

    A new compatibilization strategy installs dynamic crosslinkers into several classes of binary, ternary and postconsumer immiscible polymer mixtures in situ, with the resulting compatibilized dynamic thermosets exhibiting intrinsic reprocessability and enhanced tensile strength and creep resistance.

    • Ryan W. Clarke
    • , Tobias Sandmeier
    •  & Eugene Y.-X. Chen

  • Article |

    Preparing crystals held together with macromolecular bonds can create shape memory materials that can be engineered to exhibit a wide range of reversible changes useful for chemical sensing, optics and robotics.

    • Seungkyu Lee
    • , Heather A. Calcaterra
    •  & Chad A. Mirkin

  • Article |

    Observations by transmission electron microscopy of deforming niobium and tungsten at low temperature shows that anomalous slip in body-centred cubic metals arises from the unusually high mobility of multi-junctions, which is a source of softening.

    • Daniel Caillard
    • , Baptiste Bienvenu
    •  & Emmanuel Clouet

  • Article
    | Open Access

    Atom-scale analysis of hydrogen and other elements at the grain boundaries of a 7xxx aluminium alloy shows that co-segregation of elements favours grain boundary decohesion, and that hydrogen embrittlement is prevented by strong partitioning into the second-phase particles.

    • Huan Zhao
    • , Poulami Chakraborty
    •  & Dierk Raabe

  • Article |

    A chemically complex alloy that exhibits a high elastic strain limit and low internal friction is described; it also has an Elinvar effect (invariant elastic modulus) over a large temperature range, up to 627 °C.

    • Q. F. He
    • , J. G. Wang
    •  & Y. Yang

  • Article |

    Preparing amorphous phases of carbon with mostly sp3 bonding in bulk is challenging, but macroscopic samples that are nearly pure sp3 are synthesized here by heating fullerenes at high pressure.

    • Yuchen Shang
    • , Zhaodong Liu
    •  & Bingbing Liu

  • Perspective |

    Computing approaches based on mechanical mechanisms are discussed, with a view towards a framework in which adaptable materials and structures act as a distributed information processing network.

    • Hiromi Yasuda
    • , Philip R. Buskohl
    •  & Jordan R. Raney

  • Article |

    A structured fabric constructed of linked hollow polyhedral particles (resembling chain mail) can be simply and reversibly tuned between flexible and rigid states; when it is compressed, its linked particles become jammed.

    • Yifan Wang
    • , Liuchi Li
    •  & Chiara Daraio

  • Article |

    High-performance hydrodynamic simulations show that the skeletal structure of the deep-sea sponge Euplectella aspergillum reduces the hydrodynamic stresses on it, while possibly being beneficial for feeding and reproduction.

    • Giacomo Falcucci
    • , Giorgio Amati
    •  & Sauro Succi

  • Article |

    Origami-inspired multistable structures that can be inflated from flat to three dimensions have been designed; a library of foldable shapes is created and then combined to build metre-scale functional structures.

    • David Melancon
    • , Benjamin Gorissen
    •  & Katia Bertoldi

  • Article |

    A free-swimming soft robot inspired by deep-sea creatures, with artificial muscle, power and control electronics spread across a polymer matrix, successfully adapts to high pressure and operates in the deep ocean.

    • Guorui Li
    • , Xiangping Chen
    •  & Wei Yang

  • Article |

    Bulk ultrafine-grained steel is prepared by an approach that involves the rapid production of coherent, disordered nanoprecipitates, which restrict grain growth but do not interfere with twinning or dislocation motion, resulting in high strength and ductility.

    • Junheng Gao
    • , Suihe Jiang
    •  & W. Mark Rainforth

  • Article |

    A reprogrammable mechanical metamaterial constructed of bistable unit cells that can be switched independently and reversibly between two stable states with distinct mechanical properties using magnetic actuation is demonstrated.

    • Tian Chen
    • , Mark Pauly
    •  & Pedro M. Reis

  • Article |

    Inspired by the enhanced mechanical strength of microstructured metals, damage-tolerant architected materials are developed in which the internal structure is granular, with different regions having different lattice orientations.

    • Minh-Son Pham
    • , Chen Liu
    •  & Jedsada Lertthanasarn

  • Perspective |

    The phenomenon of ultralow friction between sliding incommensurate crystal surfaces—structural superlubricity—is examined, and the challenges and opportunities involved in its extension to the macroscale are assessed.

    • Oded Hod
    • , Ernst Meyer
    •  & Michael Urbakh

  • Letter |

    A process is described for the transformation of bulk wood into a low-cost, strong, tough, lightweight structural material, by the partial removal of lignin and hemicellulose followed by hot-pressing to densify the natural wood.

    • Jianwei Song
    • , Chaoji Chen
    •  & Liangbing Hu

  • Letter |

    The relaxation dynamics of granular materials is more like that of complex fluids than that of thermal glass-forming systems, owing to the absence of the ‘cage effect’.

    • Binquan Kou
    • , Yixin Cao
    •  & Yujie Wang

  • Letter |

    In copper components containing highly oriented nanotwins, correlated ‘necklace’ dislocations moving back and forth offer an unusually fatigue-resistant response to engineering stress.

    • Qingsong Pan
    • , Haofei Zhou
    •  & Lei Lu

  • Letter |

    The limits of dislocation-mediated metal plasticity are studied by using in situ computational microscopy to reduce the enormous amount of data from fully dynamic atomistic simulations into a manageable form.

    • Luis A. Zepeda-Ruiz
    • , Alexander Stukowski
    •  & Vasily V. Bulatov

  • Letter |

    Zirconium nanoparticles introduced into aluminium alloy powders control solidification during 3D printing, enabling the production of crack-free materials with strengths comparable to the corresponding wrought material.

    • John H. Martin
    • , Brennan D. Yahata
    •  & Tresa M. Pollock

  • Letter |

    A polymer code based on a triplet of parameters—network strand length, side-chain length and grafting density—enables materials to be designed with specific combinations of mechanical properties to mimic biological materials.

    • Mohammad Vatankhah-Varnosfaderani
    • , William F. M. Daniel
    •  & Sergei S. Sheiko

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