• C. Su^a, Y. Chen^c, P. Yu^c, M. Song^b, W. Chen^d, S.F. Guo^{a, b, ,}

• ^a Faculty of Materials and Energy, Southwest University, Chongqing 400715, China

• ^b State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

• ^c College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 400047, China

• ^d Department of Mechanical Engineering & Materials Science, Yale University, New Haven, CT 06511, USA

In this work, (Fe₇₅Mo₅P₁₃C₇)_100-xB_x (x=0.3, 0.5, 1, 1.5, 2 at.%) bulk metallic glasses (BMGs) with a diameter of 1.5 mm were successfully prepared by low purity industrial raw materials and copper mold casting. The thermal characteristics and the mechanical properties were systematically investigated. We revealed a correlation between the thermal characteristics and the mechanical properties. In particular, we found that a low glass transition temperature and a low activation energy of glass transition are generally associated with a high plasticity at room temperature. Our findings would provide a novel insight into understanding and designing high performance Fe-based BMGs from the perspective of thermal behaviors.

http://www.sciencedirect.com/science/article/pii/S0925838815319873