Synthesis of γ-TiAl by Reactive Spark Plasma Sintering of Cryomilled Ti and Al Powder Blend, Part I: Influence of Processing and Microstructural Evolution

被引：23

作者：

Sun, Yu ^{[1
]}

Kulkarni, Kaustubh ^{[2
]}

Sachdev, Anil K. ^{[3
]}

Lavernia, Enrique J. ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

[2] Gen Motors Global R&D, India Sci Lab, Bangalore 560066, Karnataka, India

[3] GM Global R&D Ctr, Chem Sci & Mat Syst Lab, Warren, MI USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2014年 / 45A卷 / 06期

基金：

美国国家科学基金会;

关键词：

PULSED DC CURRENT; NANOSTRUCTURED MATERIALS; INTERFACIAL REACTIONS; COMBUSTION SYNTHESIS; ELECTRIC-FIELD; DIFFUSION; TITANIUM; ALLOYS; GROWTH; ENERGY;

D O I：

10.1007/s11661-014-2215-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To provide insight into the influence of an electric field on the kinetics of diffusion, fully lamellar gamma-TiAl was processed by a rapid, two-stage, solid-state reactive sintering via spark plasma sintering (SPS) of a cryomilled Ti, Al powder blend. Cryomilling was implemented in the current study to attain a nanostructured grain size in the Ti and Al powder blend, and thereby provide insight into the influence of grain size on the underlying diffusion kinetics. Following a two-step process involving SPS at 873 K (600 A degrees C) for 15 minutes and 1523 K (1250 A degrees C) for 30 minutes, a fully lamellar TiAl alloy, with submicron lamellar spacing, was successfully obtained. Microstructural refinement in the Ti and Al powders during cryomilling led to an increase in solid-state diffusion, and the underlying mechanisms are discussed in detail.

引用

页码：2750 / 2758

页数：9

共 45 条

[11] VACANCY DIFFUSION IN BINARY ORDERED ALLOYS [J].

ELCOCK, EW ;

MCCOMBIE, CW .

PHYSICAL REVIEW, 1958, 109 (02) :605-606

[12] Mechanical Behavior of Cryomilled CP-Ti Consolidated via Quasi-Isostatic Forging [J].

Ertorer, Osman ;

Zuniga, Alejandro ;

Topping, Troy ;

Moss, Wes ;

Lavernia, Enrique J. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2009, 40A (01) :91-103

[13] Enhanced tensile strength and high ductility in cryomilled commercially pure titanium [J].

Ertorer, Osman ;

Topping, Troy ;

Li, Ying ;

Moss, Wes ;

Lavernia, Enrique J. .

SCRIPTA MATERIALIA, 2009, 60 (07) :586-589

[14] Modified interfacial reactions in Ag-Zn multilayers under the influence of high DC currents [J].

Friedman, JR ;

Garay, JE ;

Anselmi-Tamburini, U ;

Munir, ZA .

INTERMETALLICS, 2004, 12 (06) :589-597

[15] Enhanced growth of intermetallic phases in the Ni-Ti system by current effects [J].

Garay, JE ;

Anselmi-Tamburini, U ;

Munir, ZA .

ACTA MATERIALIA, 2003, 51 (15) :4487-4495

[16] Performance, tolerance and cost of TiAl passenger car valves [J].

Gebauer, K .

INTERMETALLICS, 2006, 14 (04) :355-360

[17] Overview paper no. 2. The synthesis and structure of nanocrystalline materials produced by mechanical attrition. A review [J].

Koch, C.C. .

Nanostructured Materials, 1993, 2 (02)

[18] Synthesis of nanostructured materials by mechanical milling: Problems and opportunities [J].

Koch, CC .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :13-22

[19] Effect of pulsed DC current on atomic diffusion of Nb-C diffusion couple [J].

Kondo, Takayuki ;

Yasuhara, Masahide ;

Kuramoto, Taku ;

Kodera, Yasuhiro ;

Ohyanagi, Manshi ;

Munir, Zuhair A. .

JOURNAL OF MATERIALS SCIENCE, 2008, 43 (19) :6400-6405

[20] Influence of pulsed DC current and electric field on growth of carbide ceramics during spark plasma sintering [J].

Kondo, Takayuki ;

Kuramoto, Taku ;

Kodera, Yasuhiro ;

Ohyanagi, Manshi ;

Munir, Zuhair A. .

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 2008, 116 (1359) :1187-1192

← 1 2 3 4 5 →