title: Mechanical properties and structural features of novel Fe-based bulk metallic glasses with unprecedented plasticity.
abstract: Fe-based bulk metallic glasses (BMGs) have attracted great attention due to their unique magnetic and mechanical properties, but few applications have been materialized because of their brittleness at room temperature. Here we report a new Fe(50)Ni(30)P(13)C(7) BMG which exhibits unprecedented compressive plasticity (>20%) at room temperature without final fracture. The mechanism of unprecedented plasticity for this new Fe-based BMG was also investigated. It was discovered that the ductile Fe(50)Ni(30)P(13)C(7) BMG is composed of unique clusters mainly linked by less directional metal-metal bonds which are inclined to accommodate shear strain and absorbed energy in the front of crack tip. This conclusion was further verified by the X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy experiments of Fe(80-x)Ni(x)P(13)C(7) (x = 0, 10, 20, 30) and Fe(72-x)Ni(x)B(20)Si(4)Nb(4) (x = 0, 7.2, 14.4, 21.6, 28.8) glassy systems. The results also indicate a strong correlation between the p-d hybridization and plasticity, verifying that the transition from brittle to ductile induced by Ni addition is due to the change of bonding characteristics in atomic configurations. Thus, we can design the plasticity of Fe-based BMGs and open up a new possible pathway for manufacturing BMGs with high strength and plasticity.
authors.affiliation: 1] School of Mechanics and Civil Engineering, State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Sciences, China University of Mining and Technology, Xuzhou 221116, People's Republic of China [2] School of Materials Science and Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Weiming
authors.initials: W
authors.lastname: Yang
authors.affiliation: School of Mechanics and Civil Engineering, State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Sciences, China University of Mining and Technology, Xuzhou 221116, People's Republic of China.
authors.forename: Haishun
authors.initials: H
authors.lastname: Liu
authors.affiliation: School of Mechanics and Civil Engineering, State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Sciences, China University of Mining and Technology, Xuzhou 221116, People's Republic of China.
authors.forename: Yucheng
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: 1] Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology &Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China [2] Department of Physics, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
authors.forename: Akihisa
authors.initials: A
authors.lastname: Inoue
authors.affiliation: Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology &Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China.
authors.forename: Kemin
authors.initials: K
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology &Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China.
authors.forename: Juntao
authors.initials: J
authors.lastname: Huo
authors.affiliation: School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, People's Republic of China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Ling
authors.affiliation: School of Physics Science and Technology, Xinjiang University, Urumqi, Xinjiang 830046, People's Republic of China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Southeast University, Nanjing 211189, People's Republic of China.
authors.forename: Baolong
authors.initials: B
authors.lastname: Shen