Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-02T20:46:33.255Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Multi-Elements Substitution on the Mechanical Properties of Intermetallic Compound

Published online by Cambridge University Press:  13 February 2019

Syuki Yamanaka ,
Ken-ichi Ikeda  and
Seiji Miura
Syuki Yamanaka*
Affiliation:
Graduate student, Department of Materials Science and Engineering, Hokkaido University, Kita13 Nishi 8, Kita-ku, Sapporo060-8628, Japan
Ken-ichi Ikeda
Affiliation:
Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita13 Nishi 8, Kita-ku, Sapporo060-8628, Japan
Seiji Miura
Affiliation:
Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita13 Nishi 8, Kita-ku, Sapporo060-8628, Japan
*
*(Email: [email protected])
Get access

Abstract

It is well known that various elements substitute for a certain sub-lattice of intermetallic compounds. There have been various experimental investigations of the effects of substituted elements on mechanical properties, however, there are few reports describing the effects of multi-element substitution. In the present study, L12-type compounds A3B (Ni3Al and Co3(Al,W)) were selected as model compounds because their substitution behavior is well known. It was reported that various elements such as Ni, Co, Cu, Pd and Pt occupy the A-site, whereas Al, Si, Ga, Ge, Ti, V, Nb, Ta, Mo, and W occupy the B-site. These elements are expected to introduce local lattice distortion, which may affect the motion of dislocations over a wide range of temperatures. Several alloys composed of five or more elements including Ni, Co, Al, Mo, and W, were prepared using an Ar-arc melting machine and heat-treated. Several alloys were found to include an (Ni, Co)3(Al, Mo, W, …)-L12 compound as a constituent phase. The nano-hardness of these L12 phases was higher than that of the high-strength Co3(Al,W)-L12 compound, confirming that multi-element substitution is an effective way to improve the mechanical properties of an intermetallic compound without decreasing the phase stability.

Keywords

compoundnano-indentationmicrostructurestructural
Type
Articles
Information
MRS Advances , Volume 4 , Issue 25-26: Processing and Manufacturing , 2019 , pp. 1497 - 1502
Check for updates
Copyright
Copyright © Materials Research Society 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Ochiai, S., Oya, Y., Suzuki, T., Acta Metallurgica, Vol. 32, 289(1984).10.1016/0001-6160(84)90057-9CrossRefGoogle Scholar
Nishizawa, T., Thermodynamics of Microstructures,1st ed. (ASM INTERNATIONAL, Materials Park, Ohio, 2008) p.70.Google Scholar
Shinagawa, K., Omori, T., Sato, J., Oikawa, K., Ohnuma, I., Kainuma, R., Ishida, K., Materials Transactions, Vol. 49, No. 6, 1474(2008).10.2320/matertrans.MER2008073CrossRefGoogle Scholar
Miura, S., Ohkubo, K., Mohri, T., Materials Transactions, Vol. 48, No. 9, 2403(2007).10.2320/matertrans.MAW200734CrossRefGoogle Scholar
Tanaka, K., Ohashi, T., Kishida, K, Inui, H, Applied Phyisics Letters, Vol.9, 181907 (2007).10.1063/1.2805020CrossRefGoogle Scholar
Otto, F., Dlouhý, A., Somsen, Ch., Bei, H., Eggeler, G., George, E. P., Acta Materialia, Vol. 61, 5743(2013).10.1016/j.actamat.2013.06.018CrossRefGoogle Scholar