X.Q. Li
材料科学技术（英文）
In current International Thermonuclear Experimental Reactor (ITER) design, the 316LN austenitic stainless steel (316LN SS) is used for first-wall/blanket structures. Thus, it is necessary to study the fundamental mechanical properties and irradiation effect of 316LN SS. A random solid solution model of Fe-Cr-Ni-Mn-Mo-Si alloy is used for describing 316LN SS. Using first-principles approaches, the elastic constants and ideal strength of the alloy were calculated. Such alloy exhibits good ductile behavior according to the theoretical values of Cauchy pressure and ratio of bulk modulus and shear modulus. Within the 256-atom supercell, inclusion of single vacancy defect further enhances the ductility of the alloy, and the existence of interstitial (Fe, H, He) atoms enhances the Young0s modulus.
关键词:
Stainless steel
X.Q. Li
,
W.P. Chen
,
W. Xia
金属学报(英文版)
Based on the characteristic of high energy milling and the micromechanics of com-
posite material, a plastic constitutive equation is implemented for milled composite
powders. To check the equation, the extrusion of Ti/Al composite powders prepared
by high energy milling was simulated. It was from the numerical analysis that the pre-
dicted extrusion pressure mounted up with milling time and extrusion ratio increasing,
which was perfect agreement with experimental results.
关键词:
high energy milling
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