The microstructure, mechanical properties and corrosion resistance of equiatomic AlCrMnFeNiCu high-entropy alloy prepared by vacuum arc melting were investigated by XRD, SEM, EDS, TEM and electrochemical workstation. The alloy consists of two different BCC structures and a FCC solid solution...

In this paper, we propose a structured trust-region algorithm combining with filter technique to minimize the sum of two general functions with general constraints. Specifically, the new iterates are generated in the Gauss-Seidel type iterative procedure, whose sizes are controlled by a...

The conic model proposed by Davidon (1980) [Davidon, WC (1980). Conic approximations and collinear scalings for optimizers. SIAM Journal on Numerical Analysis, 17, 268–281.] is an extension of quadratic model incorporating more information than quadratic model. In this paper, we propose a...

In this paper we present a new globalization strategy of the Barzilai-Borwein gradient method for large scale unconstrained optimization. Based on the filter technique introduced by Fletcher and Leyffer, a modified Barzilai-Borwein method is presented. We prove the global convergence of this...