Process for producing shaped article

A process for producing a shaped article comprising:

• preparing a first powder having high strength and rigidly after completion of forming, and a second powder having abrasion resistance and surface hardness after completion of forming;
• compacting those powders to provide a forming material comprising a base part comprising the first powder and a supplemental part comprising the second powder;
• and
• forming the forming material into a shaped article by plastic processing in which the base part and the supplemental part have different characteristics, wherein the first powder consists of a quasi-crystal alloy powder consisting of a composition represented by the following formula (V):
• AlbalM4xM5y
• wherein:
• M4:
• at least one element selected from the group consisting of Mn, Cr, V, Mo and W;
• M5:
• at least one element from the group consisting of Fe, Co, Ni, Cu, Zr, Mg, Ti, Hf, Si, Y, rare earth elements and Mm;
• x and y are, in atomic %, 0.5≦x≦10 and 0.5≦y≦10;
• and contains at least one selected from the group consisting of quasi-crystals consisting of an icosahedral phase, a regular decagonal phase or an approximant phase in the range of 30 to 90% by volume.

A process for producing a shaped article comprising:

• preparing a first powder having high strength and rigidity after completion of forming, and a second powder having abrasion resistance and surface hardness after completion of forming;
• compacting those powders to provide a forming material comprising a base part comprising the first powder and a supplemental part comprising the second powder;
• and
• forming the forming material into a shaped article by plastic processing in which the base part and the supplemental part have different characteristics, wherein the second powder is at least one member selected from the group consisting of Al2O3, Si3N4, BN, SiC, Al4C3, Al8B2O15 and B2O.

A process for producing a shaped article comprising:

• preparing a first powder having high strength and rigidity after completion of forming, and a second powder having abrasion resistance and surface hardness after completion of forming;
• compacting those powders to provide a forming material comprising a base part comprising the first powder and a supplemental part comprising the second powder;
• and
• forming the forming material into a shaped article by plastic processing in which the base part and the supplemental part have different characteristics, wherein the second powder is a mixture of
• (a) at least one selected from the group consisting of rapidly-solidified alloy powders each consisting of a composition represented by any one of the following formulae (I) to (IV) and a quasi-crystal alloy powder consisting of a composition represented by the formula (V):
• AlaM1bXe, (I)
• AlaM1(b-c)M2cXe, (II)
• AlaM1(b-d)M3dXe, (III)
• and
• AlaM1(b-c-d)M2cM3dXe (IV)
• wherein:
• M1:
• at least one element selected from the group consisting of Mn, Fe, Co, Ni and Mo;
• M2:
• at least one element selected from the group consisting of V, Cr and W;
• M3:
• at least one element selected from the group consisting of Li, Ca, Mg, Si, Cu and Zn;
• X:
• at least one element selected from the group consisting of Nb, Hf, Ta, Y, Zr, Ti, Ag, rare earth elements and Mm;
• and
• a, b, c, d and e are, in atomic %, 75≦a≦97, 0.5≦b≦15, 0.1≦c≦5, 0.5≦d≦5, and 0.5≦e≦10,
• AlbalM4xM5y (V)
• wherein:
• M4:
• at least one element selected from the group consisting of Mn, Cr, V, Mo and W;
• M5:
• at least one element selected from the group consisting of Fe, Co, Ni, Cu, Zr, Mg, Ti, Hf, Si, Y, rare earth elements and Mm;
• x and y are, in atomic %, 0.5≦x≦10 and 0.5≦y10;
• said quasi-crystal alloy powder containing at least one selected from the group consisting of quasi-crystals consisting of an icosahedral phase, a regular decagonal phase or an approximant phase in the range of 30 to 90% by volume, and
• (b) at least one alloy powder selected from the group consisting of Al2O3, Si3N4, BN, SiC, Al4C3, Al8B2O15 and B2O.

A process for producing a shaped article comprising:

• preparing a first powder having high strength and rigidity after completion of forming, and a second powder having abrasion resistance and surface hardness after completion of forming;
• compacting those powders to provide a forming material comprising a base part comprising the first powder and a supplemental part comprising the second powder;
• and
• forming the forming material into a shaped article by plastic processing in which the base part and the supplemental part have different characteristics, wherein the first powder is at least one rapidly-solidified alloy powders each consisting of a composition represented by any one of the following formulae (I) to (IV):
• AlaM1bXe, (I)
• AlaM1(b-c)M2cXe, (II)
• AlaM1(b-d)M3dXe, (III)
• and
• AlaM1(b-c-d)M2cM3dXe (IV)
• wherein:
• M1:
• at least one element selected from the group consisting of Mn, Fe, Co, Ni and Mo;
• M2:
• at least one element selected from the group consisting of V, Cr and W;
• M3:
• at least one element selected from the group consisting of Li, Ca, Mg, Si, Cu and Zn;
• X:
• at least one element selected from the group consisting of Nb, Hf, Ta, Y, Zr, Ti, Ag, rare earth elements and Mm;
• and
• a, b, c, d and e are, in atomic %, 75≦a≦97, 0.5≦b≦15, 0.1≦c≦5, 0.5≦d≦5, and 0.5≦e≦10,
• and the second powder is a quasi-crystal alloy powder consisting of a composition represented by the formula (V):
• AlbalM4xM5y (V)
• wherein:
• M4:
• at least one element selected from the group consisting of Mn, Cr, V, Mo and W;
• M5:
• at least one element selected from the group consisting of Fe, Co, Ni, Cu, Zr, Mg, Ti, Hf, Si, Y, rare earth elements and Mm;
• x and y are, in atomic %, 0.5≦x≦10 and 0.5≦y10;
• said quasi-crystal alloy powder containing at least one selected from the group consisting of quasi-crystals consisting of an icosahedral phase, a regular decagonal phase or an approximant phase in the range of 30 to 90% by volume.