Ductilization of a Ni3(Si,Ti) Intermetallic Alloy by Addition of Interstitial Type Elements

Hisashi Kosaka; Yasuyuki Kaneno; Takayuki Takasugi

doi:10.4028/www.scientific.net/AMR.409.321

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Strengthening by Addition of Refractory Elements to Ni₃(Si,Ti) Intermetallic Alloys
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Ductilization of a Ni₃(Si,Ti) Intermetallic Alloy by Addition of Interstitial Type Elements
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 409Ductilization of a Ni3(Si,Ti) Intermetallic Alloy...

Ductilization of a Ni₃(Si,Ti) Intermetallic Alloy by Addition of Interstitial Type Elements

Abstract:

The effect of a concomitant doping of interstitial type elements boron (B) and carbon (C), and boron (B) and nitrogen (N) on tensile properties of a Ni₃(Si,Ti) intermetallic alloy was investigated in the temperature range between room temperature and 973 K. It was found that the concomitant doping of (C/B) and (N/B) remarkably improved the intermediate-temperature tensile elongation of the Ni₃(Si,Ti) alloy compared with the simple doping of B or C. It was also shown that the fracture surface of the alloy doped with (C/B) and (N/B) exhibited the ductile transgranular fracture mode while that of the alloy doped with only B showed a brittle intergranular fracture mode at 773 K. These results clearly indicate that the concomitant doping of the interstitial type elements are useful for improving the intermediate-temperature tensile ductility of the Ni₃(Si,Ti) alloy.

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Periodical:

Advanced Materials Research (Volume 409)

Pages:

321-326

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.409.321

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Online since:

November 2011

Authors:

Hisashi Kosaka, Yasuyuki Kaneno, Takayuki Takasugi

Keywords:

Boron, Carbon, Ductility, Intermetallic, L1₂, Nitrogen

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