摘要:
An amorphous magnesium alloy has a composition of Mg a M b X c (M is Zn and/or Ga, X is La, Ce, Mm (misch metal), Y, Nd, Pr, Sm and Gd), a is from 65 to 96.5 atomic %, b is from 3 to 30 atomic %, and c is from 0.2 to 8 atomic %). The magnesium alloy has a high specific strength and does not embrittle at room temperature.
摘要:
An amorphous alloy material consisting of a principal element and other additive elements and containing fine grains of perfect crystals having an average particle size of 2 to 100 nm that are formed by self-control and dispersed in an amorphous alloy matrix; and a method for self-controlling the average particle size of the crystal to be in the range of 2 to 100 nm through the stable phase of the amorphous phase or the stability corresponding to precipitation treatment temperature in the amorphous matrix by heating the amorphous material. Examples of the principal element include Al, Mg and Ni and those of the additive elements include rare earth elements. The alloy material has superior mechanical strength and toughness and exhibits precipitation-induced plastic flow.
摘要:
A high-strength aluminum alloy consisting of an amorphous phase containing quasicrystals constituted of aluminum as the principal element, a first additive element consisting of at least one rare earth element and a second additive element consisting of at least one element other than aluminum and rare earth elements, and a crystalline phase consisting of the principal element and the first additive element and the second additive element contained in a supersaturated solid solution form, the amorphous phase containing quasicrystals being contained in a volume percentage of 60 to 90 %. The contents of the additive elements preferably fall within a hatched range in the figure, still preferably within a range covered with dot-dash lines in the figure.