摘要:
A cast magnetic refrigerant having a composition represented byLn.sub.a A.sub.b M.sub.cwherein Ln is at least one element selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb; A is any one of elements of Al and Ga; M is at least one element selected from the group consisting of Fe, Co, Ni, Cu and Ag; each of a, b and c is atomic %, with the proviso that a+b+c=100 atomic %, 20 atomic % .ltoreq.a.ltoreq.80 atomic %, 5 atomic % .ltoreq.b .ltoreq.50 atomic %, 5 atomic % .ltoreq.c.ltoreq.60 atomic %, and having an amorphous structure with a difference .DELTA.T of 10K or more between a glass transition temperature Tg and a crystallization temperature Tx.
摘要翻译:具有由LnaAbMc表示的成分的铸造磁性制冷剂,其中Ln是选自由Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm和Yb组成的组中的至少一种元素; A是Al和Ga的元素中的任何一种; M是选自Fe,Co,Ni,Cu和Ag中的至少一种元素; a,b和c中的每一个是原子%,条件是a + b + c = 100原子%,20原子% = 80原子%,5原子% b = 50 原子%,5原子% = c <60原子%,并且在玻璃化转变温度Tg和结晶温度Tx之间具有10K或更高的差异ΔTA的非晶结构。
摘要:
An aluminum-alloy, which is wear-resistant and does not wear greatly the opposed cast iron or steel, and which can be warm worked. The alloyings the following composition and structure. Composition: Al.sub.a Si.sub.b M.sub.c X.sub.d T.sub.e (where M is at least one element selected from the group consisting of Fe, Co and. Ni; X is at least one element selected from the group consisting of Y, Ce, La and Mm (misch metal); Y is at least one element selected from the group consisting of Mn, Cr, V, Ti, Mo, Zr, W, Ta and Hf; a=50-85 atomic %, b=10-49 atomic %, c=0.5-10 atomic %, d=0.5-10 atomic %, e=0-10 atomic %, and a+b+c+d+e=100 atomic %. Structure: super-saturated face-centered cubic crystals and fine Si precipitates.
摘要翻译:铝合金,耐磨,不会大大磨损相对的铸铁或钢,可以加热。 合金的组成和结构如下。 组成:AlaSibMcXdTe(其中M是选自Fe,Co和Ni中的至少一种元素; X是选自Y,Ce,La和Mm(混合稀土金属)中的至少一种元素; Y是 选自Mn,Cr,V,Ti,Mo,Zr,W,Ta和Hf中的至少一种元素; a = 50-85原子%,b = 10-49原子%,c = 0.5-10原子 %,d = 0.5-10原子%,e = 0-10原子%,a + b + c + d + e = 100原子%结构:超饱和的面心立方晶体和微细的Si析出物。
摘要:
Disclosed herein is 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:
A solidified amorphous alloy material is produced from a melt of its desired metal material. A melt feeding route is provided with a first-stage quenching zone. The melt is quenched to a predetermined temperature in the first-stage quenching zone. The thus-quenched melt is then introduced into a second-stage quenching and solidification zone, whereby the melt is cooled further and solidified into a solidified material having an amorphous phase.
摘要:
Amorphous alloys containing carbon as a metalloid having the amorphous alloy forming ability are low in the production cost because of use of carbon as the metalloid, do not generate harmful gas during production and are easily produced. These alloys have high strength, hardness, crystallizing temperature, embrittling temperature and corrosion resistance. Alloys having high permeability, non-magnetic property or low magnetostriction are obtained depending upon the component composition and the alloys are utilized for various uses depending upon these properties.
摘要:
Orthodontic appliances in accordance with the present invention are formed from amorphous alloys having a supercooling liquid region. The appliances have high corrosion resistance, high durability and high strength. The appliances are particularly useful when changes and adjustments in the orthodontic state become necessary in the course of orthodontic treatment. The present invention also provides improvements in the base surfaces of orthodontic appliances adapted to be bonded to tooth surfaces. The appliances can consequently be securely affixed to tooth surfaces.
摘要:
An alloy material 4 received in a melting hearth 1 is melted by high-density energy supplied from a heat source 5. The molten alloy is transferred to a forced-cooled die 3 having a cavity 2 defining the profile of a product, and quenched to an amorphous state. The alloy has the composition represented by the general formula of Zr.sub.100-a-b-c A.sub.a B.sub.b C.sub.c (wherein the mark A represents one or more elements selected from Ti, Hf, Al and Ga, the mark B represents one or more elements selected from Fe, Co, Ni and Cu, the mark C represents one or more elements selected from Pd, Pt, Au and Ag, and the marks a-c represent the atomic ratios of respective elements A-C under the conditions of a=5-20, b=15-45, c.ltoreq.10 and a+b+c=30-70. The differential temperature region .DELTA.T (=T.sub.x -T.sub.g) in the supercooled liquid phase of the Zr alloy represented by the difference between the crystallization point T.sub.x and the glass transition point T.sub.g, is preferably 100 K or more. The obtained amorphous alloy has a rod-shaped or tubular profile having a large cross section and being excellent in plastic workability.
摘要翻译:容纳在熔化炉床1中的合金材料4由从热源5供给的高密度能量熔化。熔融合金被转移到具有限定产品轮廓的空腔2的强制冷却模具3中, 无定形状态。 该合金具有由通式Zr100-ab-cAaBbCc表示的组成(其中,标记A表示选自Ti,Hf,Al和Ga中的一种或多种元素,标记B表示选自Fe,Co, Ni和Cu,标记C表示选自Pd,Pt,Au和Ag中的一种或多种元素,标记ac表示在a = 5-20,b = 15-45的条件下各元素AC的原子比, c + = 10-70,a + b + c = 30-70,Zr合金过冷液相中的温差区域DELTA T(= Tx-Tg)由结晶点Tx和玻璃化转变温度 点Tg优选为100K以上,得到的非晶合金具有截面积大,塑性加工性优异的棒状或管状。
摘要:
The present invention provides a high strength and anti-corrosive aluminum-based alloy essentially consisting of an amorphous structure or a multiphase amorphous/fine crystalline structure, which is represented by the general formula Al.sub.x M.sub.y R.sub.z. In this formula, M represents at least one metal element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Cu, Zr, Nb, Mo and Ni, and R represents at least one element or mixture selected from the group consisting of Y, Ce, La, Nd and Mm (misch metal). Additionally, in the formula, x, y and z represent the composition ratio, and are atomic percentages satisfying the relationships of x+y+z=100, 64.5.ltoreq.x.ltoreq.95, 5.ltoreq.y.ltoreq.35, and 0
摘要翻译:本发明提供了一种基本上由通式Al x M y R z表示的非晶结构或多相非晶/细晶结构的高强度和抗腐蚀性的铝基合金。 在该式中,M表示选自Ti,V,Cr,Mn,Fe,Co,Cu,Zr,Nb,Mo和Ni中的至少一种金属元素,R表示至少一种选自 由Y,Ce,La,Nd和Mm(混合稀土金属)组成的组。 此外,在该式中,x,y和z表示组成比,并且是满足x + y + z =100,64.5≤x≤95,5≤y≤1的关系的原子百分比。 35,0
摘要:
A structural member is produced using starting powder consisting of composite particulates each containing AlN grain within its surface covered by an Al layer of a single crystal structure, and Al alloy particulates of a single crystal structure, and then by sintering the Al layers of the composite particulates with the Al alloy particulates. The Al layers and the Al alloy particulates of the single crystal structure have no dislocation fault, crystal grain boundary. etc., produced therein, and for this reason, they have a low chemical activity. Therefore, the Al layers and the like have a characteristic that they are extremely difficult to oxidize. This ensures that the Al layers and the Al alloy particulates can be reliably sintered to achieve the densification of the resulting structural member.
摘要:
A high strength aluminum alloy is expressed by a general formula, Al.sub.a X.sub.b Mm.sub.c, in which "X" stands for at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zr, "Mm" stands for a misch metal, a content "a" of aluminum falls in a range of from 95.2 to 97.5 atomic %, and a content "b" of "X" and a content "c" of the "Mm" fall in a hatched area enclosed by points "A," "B," "C" and "D" of accompanying FIG. 1 on atomic % basis, and whose metallic phase includes microcrystalline phases or mixed phases containing amorphous phases in a volume content of less than 50% and the balance of microcrystalline phases. As a result, the amorphous phases or the microcrystalline phases are dispersed uniformly in its base microcrystalline phases appropriately, and at the same time the thus generating base microcrystalline phases are reinforced by forming solid solutions including the "Mm" and the transition metal element "X" as well. Hence, the high strength aluminum alloy comes to have a low specific gravity and a high strength which have not been available from conventional Al amorphous alloys.