23 Result(s)

Article

Metastabile Extensions of Intermediate Phases in Some Aluminum - Rare-Earth Metal Systems

Using the arc-furnace hammer-and-anvil method, metastable alloys in the Al-rich portions of four Al-RE systems (10–30 at. pet. RE; Re = Gd, Ho, Er and Y) were prepared and examined by XRD. The principal result...

M. X. Quan, P. Haldar, J. Werth, B. C. Giessen in MRS Online Proceedings Library (1985)

Article

Formation and Thermal Stability of Quasi Crystalline and Other Metastable Al-Rich Al-Mn Phases

RSP of Al-rich Al-Mn alloys is known to produce several metastable phases, including (with increasing Mn content) supersaturated Al solid solution and two non-crystallographic phases, identified in the literat...

M. X. Quan, B. C. Giessen in MRS Online Proceedings Library (1985)

Article

A Long-Period Close-Packed Phase of the PuGa₃ Type Prepared by RSP: m-Nb (Rh_.75 Pd_.25)₃

In the pseudobinary system Nb(Rh_1−xPd_x)₃, as in other similar alloy systems, a series of polytypic phases occurs which have related, closepacked structures with systematically varying stacking sequences. After ra...

M. X. Quan, P. Haldar, B. C. Giessen in MRS Online Proceedings Library (1986)

Article

Effect of polarizable atmospheres on superconductivity of the Y-Ba-Cu-O compounds

This letter reports that there may exist an intense interaction between the Y-Ba-Cu-O superconductors and polarizable molecules, which results in a change in structure and affects the superconductivity. This p...

D. Pang, Z. Yang, D. Chen, M. X. Quan in Applied Physics A (1989)

Article

Wettability and spreading kinetics of liquid aluminium on boron nitride

The wettability and spreading kinetics of liquid AI on CVD-BN were investigated by the sessile drop method in a vacuum of about 1.1×10⁻³ Pa at 1070 to 1430 K. The wettability on the Al-BN system was different fro...

X. M. Xue, J. T. Wang, M. X. Quan in Journal of Materials Science (1991)

Article

Effect of atmosphere on further milling mechanically alloyed Ni₆₀Ti₄₀ amorphous powders

K. Y. Wang, T. D. Shen, J. T. Wang, M. X. Quan in Journal of Materials Science Letters (1992)

Article

Formation of nanocrystalline Fe/SiC composite by mechanical alloying

T. D. Shen, K. Y. Wang, M. X. Quan, J. T. Wang in Journal of Materials Science Letters (1992)

Article

Different transformation paths of the amorphization reaction by mechanical alloying in different atmospheres

K. Y. Wang, T. D. Shen, M. X. Quan, J. T. Wang in Journal of Materials Science Letters (1992)

Article

Hall-Petch relationship in nanocrystalline titanium produced by ball-milling

K. Y. Wang, T. D. Shen, M. X. Quan, W. D. Wei in Journal of Materials Science Letters (1993)

Article

Solid state amorphization reactions in Ni/Ti multilayer composites prepared by cold rolling

Solid state amorphizations in mechanically deformed Ni/Ti multilayer composites have been investigated by differential scanning calorimetry and X-ray diffraction. The growth of amorphous alloy in our Ni/Ti com...

T. D. Shen, M. X. Quan, J. T. Wang in Journal of Materials Science (1993)

Article

Characteristics of the mechanically-alloyed Ni₆₀Ti₄₀ amorphous powders during mechanical milling in different atmospheres

Mechanically alloyed Ni₆₀Ti₄₀ amorphous powders were further milled in argon, nitrogen and oxygen atmospheres. X-ray diffraction, differential scanning calorimetry and transmission electron microscopy analyses we...

K. Y. Wang, T. D. Shen, J. T. Wang, M. X. Quan in Journal of Materials Science (1993)

Article

Solid-state reaction between crystalline nickel and amorphous Fe₇₈Si₁₂B₁₀ powders during mechanical milling

The solid-state reaction between crystalline nickel and pulverized melt-spun amorphous Fe₇₈Si₁₂B₁₀ powders during mechanical milling has been investigated. For the powder mixtures with low nickel content (≤ 30 at...

K. Y. Wang, J. T. Wang, M. X. Quan in Journal of Materials Science (1993)

Article

Synthesis of Al-based metastable alloys by mechanical milling Al and amorphous Fe₇₈Si₁₂B₁₀powders

Syntheses of Al-based metastable alloys from powder mixtures of elemental Al and amorphous Fe₇₈Si₁₂B₁₀ [x at. % Al + (100 — x) at. % (Fe₇₈Si₁₂B₁₀)] alloy by mechanical milling (MM) using a planetary ball mill are...

K. Y. Wang, A. Q. He, T. D. Shen, M. X. Quan, J. T. Wang in Journal of Materials Research (1994)

Article

Amorphous phase growth by isothermal annealing-induced interdiffusion reactions in mechanically deformed Ni/Ti multilayered composites

The growth of amorphous phase and the formation of competing intermetallic compounds in mechanically deformed Ni/Ti multilayered composites have been investigated by X-ray diffraction, scanning electron micros...

T. D. Shen, M. X. Quan, J. T. Wang, Z. Q. Hu in Journal of Materials Science (1994)

Article

Evidence of kinetically controlled process in preparing supersaturated Al-Ti solid solutions

G. J. Fan, M. X. Quan, Z. Q. Hu in Journal of Materials Science Letters (1995)

Article

Metastable phases formation induced by mechanical alloying

Elemental aluminium, titanium and iron powders with compositions of Al₉₀Ti₁₀, Al₅₅Ti₄₅, Al₆₅Ti₂₅Fe₁₀, respectively, were mechanically alloyed in a planetary ball mill. The sequence of phase formation was characte...

G. J. Fan, M. X. Quan, Z. Q. Hu in Journal of Materials Science (1995)

Article

Effect of nickel addition on the combustion reaction of the Ti–C system during mechanical alloying

The explosive reactions or self-propagating high temperature synthesis (SHS) take place during milling Ni₂₀Ti₅₀C₃₀ and Ni₅₀Ti₃₀C₂₀ elemental powder mixtures. The coexistence of agglomerates and powders in product...

L. L. Ye, J. Y. Huang, Z. G. Liu, M. X. Quan, Z. Q. Hu in Journal of Materials Research (1996)

Article

Thermochemistry of combustion reaction in Al–Ti–C system during mechanical alloying

The combustion reaction while mechanical alloying (MA) the Al–Ti–C system has been detected by in situ thermal analysis and the results of x-ray diffraction (XRD). Based on the information provided by in situ the...

L. L. Ye, Z. G. Liu, S. D. Li, M. X. Quan, Z. Q. Hu in Journal of Materials Research (1997)

Article

Low temperature anneal-embrittlement of (Fe0.99Mo0.01)78Si9B13 amorphous ribbon: boron segregation?

Abstracts are not published in this journal

J. M. Li, M. X. Quan, Z. Q. Hu in Journal of Materials Science Letters (1997)

Article

Solid-state reaction in nanocrystalline Fe/SiC composites prepared by mechanical alloying

Different solid-state reactions, i.e. Fe + SiC → Fe₃C + Fe(Si), and Fe + SiC → Fe₃Si + Fe₂Si + C, were found in mechanically alloyed nanocrystalline Fe/SiC composites induced by prolonged milling or heat treatmen...

T. D Shen, C. C Koch, K. Y Wang, M. X Quan, J. T Wang in Journal of Materials Science (1997)