The Ni−Zr (Nickel-Zirconium) system

Nash, Philip; Jayanth, C. S.

doi:10.1007/bf02868950

Cited by 101 publications

(44 citation statements)

References 23 publications

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“…The experimentally observed composition range of amorphous phases in the Ni-Zr system [12] is 10-78 at % Zr [13]. Detailed information about the thermodynamic data and glass formation is given in the literature [6,14].…”

Section: Introductionmentioning

confidence: 98%

Temperature dependence of the mixing enthalpy and excess heat capacity in the liquid system nickel-zirconium

et al. 1996

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The mixing enthalpy AH m of the liquid system Ni-Zr was measured in the Nirich range at 1916 K up to .Xzr = 0.34 at % and for the first time in the Zr-rich range at 2270 K up to -X' Ni = 0.54 at %. Using the thermodynamic-dapted power series, a composition-and temperature-dependent description of AH m was given. Furthermore, the partial differentiation of AHm(x, T) by T yielded the excess heat capacity CpX~(x, T). The existence of chemical short-range order (associate) in the vicinity of Ni7Zr2 and NiZr was shown and was discussed with reference to AHm(x, T) and CpX~(x, T) ( 1748 to 2270 K). With decreasing temperature, the influence of chemical short-range order tended toward the composition NiZr.

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Section: Introductionmentioning

confidence: 98%

Temperature dependence of the mixing enthalpy and excess heat capacity in the liquid system nickel-zirconium

et al. 1996

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“…1(b)), only one endothermic peak is observed during melting of the alloy with x ¼ 0, because it is located near a deep binary eutectic. 25) The T l decreases with increasing Al content from x ¼ 0 to 8, and the Cu 47 Zr 45 Al 8 alloy exhibits the lowest T l of 1190 K, the narrowest temperature interval between T m and T l and only a distinct endothermic peak. When the Al content is further increased to x ¼ 10, the T l rises.…”

Section: Resultsmentioning

confidence: 91%

Synthesis and Mechanical Properties of New Cu-Based Cu-Zr-Al Glassy Alloys with Critical Diameters up to Centimeter Order

Zhou

Zhang

et al. 2010

Mater. Trans.

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A new Cu-based Cu-Zr-Al glassy alloy has been found to exhibit very high glass-forming ability, wide supercooled liquid region and high fracture strength. The addition of Al to a binary eutectic Cu 55 Zr 45 alloy significantly increases the stabilization of supercooled liquid as well as glass-forming ability in Cu 55Àx Zr 45 Al x (x ¼ 0 to 10) alloy series. The largest supercooled liquid region of 80 K, reduced glass transition temperature of 0.60 and value of 0.417 are simultaneously obtained for a ternary eutectic Cu 47 Zr 45 Al 8 alloy, which can fabricate fully glassy sample with critical diameters up to 15 mm by copper mold casting. The bulk glassy alloy also exhibits high compressive fracture strength of over 1900 MPa and the high Young's modulus above 100 GPa.

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“…The solubility of Zr and B in c and c¢ is extremely low, 31,32,35,36 and thus, the aforementioned elements segregate into the boundary (c/c¢) eutectic-residual liquid interface, thus, providing favorable conditions for the precipitation of phases rich in Zr like Ni 5 Zr or Ni 7 Zr 2 and phases rich in B like M 5 B 3 or M 3 B 2 borides. 31,32,35,36 On the basis of phase equilibrium 37 for the binary alloy Ni-Zr, it can be clearly stated that only one eutectic reaction occurs (which takes place at 1170°C), in which L fi c + Ni 5 Zr. This stands in clear contrast with our observations.…”

Section: Microstructure Constituents and Solidification Pathmentioning

confidence: 99%

The Influence of the Melt-Pouring Temperature and Inoculant Content on the Macro and Microstructure of the IN713C Ni-Based Superalloy

Matysiak

Zagórska

Bałkowiec

et al. 2015

JOM

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The aim of this work was to determine the effect of melt-pouring temperature T m and inoculant (cobalt aluminate-CoAl 2 O 4 ) concentration in the prime coat of the shell mold on the macro-and microstructure of the IN713C superalloy. The results show that cobalt aluminate is an effective modifier of the IN713C superalloy, which causes refinement of the equiaxed grains (EX) and a reduction of the fraction and size of the columnar grains on the casting surface. Also, the melt-pouring temperature in the range of 1450-1520°C was found to influence the mean EX grain size. Based on the results of differential thermal analysis of the alloy and detailed microstructure characterization, a sequence of precipitations has been proposed that advances current understanding of processes that take place during alloy solidification and casting cooling.

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The Ni−Zr (Nickel-Zirconium) system

Cited by 101 publications

References 23 publications

Temperature dependence of the mixing enthalpy and excess heat capacity in the liquid system nickel-zirconium

Temperature dependence of the mixing enthalpy and excess heat capacity in the liquid system nickel-zirconium

Synthesis and Mechanical Properties of New Cu-Based Cu-Zr-Al Glassy Alloys with Critical Diameters up to Centimeter Order

The Influence of the Melt-Pouring Temperature and Inoculant Content on the Macro and Microstructure of the IN713C Ni-Based Superalloy

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