Abstract
Cold working by swaging and shape-rolling of mechanically alloyed compact is proposed to fabricate the composite wires. The bulk mechanical alloying is useful here to produce a sufficient amount of homogeneously refined mixture of nickel and aluminum in bulk. Through heat treatment at 873 K for 10 h, Ni-sheathed green wires can be converted to a composite wire of nickel aluminides. Since mechanical alloyed powder compact is used as a starting material for fabrication of composite wires, regularization reaction into nickel aluminides can be ignited at relatively low temperatures. The bulk mechanical alloying is used to yield the refined elemental mixture without any formation of intermetallic compounds, so that sufficient workability should be preserved for the subsequent wiring process. The present method is supposed to be promising to make near-net shaping of nickel aluminides. Warm extrusion method is also utilized in this method instead of heat treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 522-531 |
| Number of pages | 10 |
| Journal | Materials Science and Engineering A |
| Volume | 239-240 |
| Issue number | 1-2 |
| Publication status | Published - 1997 Dec |
| Externally published | Yes |
Fingerprint
Keywords
- Bulk mechanical alloying
- Cold working
- Composite wire
- Heat treatment
- Metal precursor
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Fabrication of Ni-sheathed nickel aluminide wires from mechanically alloyed precursors. / Aizawa, Tatsuhiko; Kihara, Junji.
In: Materials Science and Engineering A, Vol. 239-240, No. 1-2, 12.1997, p. 522-531.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication of Ni-sheathed nickel aluminide wires from mechanically alloyed precursors
AU - Aizawa, Tatsuhiko
AU - Kihara, Junji
PY - 1997/12
Y1 - 1997/12
N2 - Cold working by swaging and shape-rolling of mechanically alloyed compact is proposed to fabricate the composite wires. The bulk mechanical alloying is useful here to produce a sufficient amount of homogeneously refined mixture of nickel and aluminum in bulk. Through heat treatment at 873 K for 10 h, Ni-sheathed green wires can be converted to a composite wire of nickel aluminides. Since mechanical alloyed powder compact is used as a starting material for fabrication of composite wires, regularization reaction into nickel aluminides can be ignited at relatively low temperatures. The bulk mechanical alloying is used to yield the refined elemental mixture without any formation of intermetallic compounds, so that sufficient workability should be preserved for the subsequent wiring process. The present method is supposed to be promising to make near-net shaping of nickel aluminides. Warm extrusion method is also utilized in this method instead of heat treatment.
AB - Cold working by swaging and shape-rolling of mechanically alloyed compact is proposed to fabricate the composite wires. The bulk mechanical alloying is useful here to produce a sufficient amount of homogeneously refined mixture of nickel and aluminum in bulk. Through heat treatment at 873 K for 10 h, Ni-sheathed green wires can be converted to a composite wire of nickel aluminides. Since mechanical alloyed powder compact is used as a starting material for fabrication of composite wires, regularization reaction into nickel aluminides can be ignited at relatively low temperatures. The bulk mechanical alloying is used to yield the refined elemental mixture without any formation of intermetallic compounds, so that sufficient workability should be preserved for the subsequent wiring process. The present method is supposed to be promising to make near-net shaping of nickel aluminides. Warm extrusion method is also utilized in this method instead of heat treatment.
KW - Bulk mechanical alloying
KW - Cold working
KW - Composite wire
KW - Heat treatment
KW - Metal precursor
UR - http://www.scopus.com/inward/record.url?scp=0346616613&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0346616613&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0346616613
VL - 239-240
SP - 522
EP - 531
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 1-2
ER -