Results 1 to 10 of about 18,714 (142)

Structure-dynamics relationships in cryogenically deformed bulk metallic glass [PDF]

Nature Communications, 2022
Understanding of the atomic-scale mechanisms of rejuvenation of bulk metallic glass still remains unclear. Here, using configurational entropy derived from X-ray experiments, authors show a clear picture of the relaxation process during annealing of a ...
Florian Spieckermann, Daniel Şopu, Viktor Soprunyuk, Michael B. Kerber, Jozef Bednarčík, Alexander Schökel, Amir Rezvan, Sergey Ketov, Baran Sarac, Erhard Schafler, Jürgen Eckert   +10 more
doaj   +2 more sources

Direct measurement of nanostructural change during in situ deformation of a bulk metallic glass [PDF]

Nature Communications, 2019
Observing defect formation during bulk metallic glass deformation remains challenging. Here, the authors combine in situ nanobeam electron diffraction and large-scale molecular dynamics simulations to directly link changes to the local atomic ordering ...
Thomas C. Pekin, Jun Ding, Christoph Gammer, Burak Ozdol, Colin Ophus, Mark Asta, Robert O. Ritchie, Andrew M. Minor   +7 more
doaj   +2 more sources

Extreme rejuvenation and softening in a bulk metallic glass [PDF]

Nature Communications, 2018
Deforming metallic glasses can rejuvenate them to higher energy states, but only in the shear bands where deformation is usually concentrated. Here, the authors use a notched setup to suppress shear banding and promote significant bulk softening of a ...
J. Pan, Y. X. Wang, Q. Guo, D. Zhang, A. L. Greer, Y. Li   +5 more
doaj   +2 more sources

Additive manufacturing of bulk metallic glass: Principles, materials and prospects

Materials Today Advances, 2022
Additive manufacturing of metallic glass has attracted great attentions from researchers owing to the prospect of free-form fabricating high-performance bulk amorphous alloy parts.
Wenzheng Wu, Xuechao Li, Qingping Liu, Jerry Ying Hsi Fuh, Aodu Zheng, Yiming Zhou, Luquan Ren, Guiwei Li   +7 more
doaj   +1 more source

Thermoplastic Forming of a Hydrophilic Surface with a Nanostructure Array on Zr-Cu-Ni-Al-Y Bulk Metallic Glass

Metals, 2021
The poor thermoplastic formability of reactive Zr-based bulk metallic glass becomes the main limiting factor for replacing the noble-metal-based and Be-rich bulk metallic glasses in nanostructure fabrication.
Sirui Cheng, Jiang Ma, Feng Gong, Jun Shen   +3 more
doaj   +1 more source

Ductile Bulk Metallic Glass [PDF]

Physical Review Letters, 2004
We report on experimental evidence of pronounced global plasticity measured in monolithic Pt57.5Cu14.7Ni5.3P22.5 bulk metallic glass under both bending and unconfined compression loading conditions. A plastic strain of 20% is measured, never before seen in metallic glasses.
Schroers, Jan, Johnson, William L.
openaire   +3 more sources

Assessment of Severe Plastic Deformation Processes in Bulk and Nanostructured Metallic Glass

Frontiers in Materials, 2022
The metallic glasses are known as amorphous and metastable materials. These materials have superior mechanical properties over crystalline materials with the same chemistry. Continuous efforts were made to improve the properties of metallic glass.
Shiv Prakash Singh, Mahmoud Ebrahimi, Shokouh Attarilar, Liqiang Wang, Qudong Wang, Faramarz Djavanroodi   +5 more
doaj   +1 more source

Role of effective strain on the deformability of brittle Hf-based bulk metallic glass

Journal of Materials Research and Technology, 2021
Numerical finite element method (FEM) calculation results reveal that the effective strain differs between the ductile Zr-based bulk metallic glass and brittle Hf-based bulk metallic glass (BMG) during rolling at room temperature.
Song-Yi Kim, Eun-Soo Park, Jürgen Eckert, Min-Ha Lee   +3 more
doaj   +1 more source

Improvement the Plasticity via Dual-Amorphous and Nanocrystals Synergistically in a Zr-Cu-Al-Nb Bulk Metallic Glass Composite

Metals, 2020
In this work, a small amount of Nb has been added in a Zr52Cu42.5Al5.5 bulk metallic glass, and a Zr52Cu42Al5.5Nb0.5 bulk metallic glass composite with dual-amorphous and nanocrystal structures has been developed for the first time.
Tuo Wang, Xiaohui Yang, Qiang Li, Chuntao Chang   +3 more
doaj   +1 more source

A Novel Ni-Free Zr-Based Bulk Metallic Glass with High Glass Forming Ability, Corrosion Resistance and Thermal Stability

Chinese Journal of Mechanical Engineering, 2020
Zr-based Bulk metallic glasses exhibit incredible corrosion resistance and glass forming ability, however, these properties need further enhancement to meet the practical use. In this study, Zr63Fe2.5Cu23Al11.5, a new type of Zr-based bulk metallic glass
Yu Luo, Yidong Jiang, Pei Zhang, Xin Wang, Haibo Ke, Pengcheng Zhang   +5 more
doaj   +1 more source