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.
摘要:
Disclosed is herein a process for forming an amorphous alloy material capable of showing glass transition, which comprises holding the material between frames arranged in combination; and heating the material at a temperature between its glass transition temperature (Tg) and its crystallization temperature (Tx) and, at the same time, producing a pressure difference between opposite sides of the material, whereby the material is brought into close contact against a forming mold disposed on one side of the material. As an alternative, the forming mold is brought into close contact against the amorphous material in a direction opposite to the pressing direction for the amorphous material. By the above processes, precision-formed products of amorphous alloys can be manufactured and supplied at low cost. These formed amorphous alloy products can be used as mechanical structure parts and components of high strength and high corrosion resistance, various strength members, electronic parts, arts and crafts, original printing plates, or the like.
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 magnesium-based alloy possessing a microcrystalline composition represented by the general formula: Mg a Al b Zn c (wherein a, b, and c stand for atomic percents respectively in the ranges of 80 ≦ a ≦ 92, 4 ≦ b ≦ 12, and 4
摘要翻译:具有由以下通式表示的微晶组合物的高强度镁基合金:MgaAlbZnc(其中a,b和c分别表示80%的范围内的原子百分比, b = 12和4