Effect of the alloying element chromium on the room temperature ductility of Fe3Al intermetallics

Huang, Yunhua; Yang, Wensheng; Zhan, Sun

doi:10.1016/s0966-9795(00)00115-1

Cited by 42 publications

(19 citation statements)

References 12 publications

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“…The model 16) was schematic drawn in the Fig. 8(a) Huang et al 18,19) reported that the alloying element Cr decreased the energy of antiphase boundaries and improved the mobility of dislocations, as a result, the ductility of the Fe 3 Al alloy was increased. Li et al 20) found that addition of Cr not only improved the cleavage strength, but also grain boundary strength of the FeAl alloy, as shown in the Fig.…”

Section: Effect Of Cr Addition On Magnetostriction and The Mechanicalmentioning

confidence: 99%

Effect of B and Cr on Mechanical Properties and Magnetostriction of Iron-Gallium Alloy

Gao

Zhu

et al. 2009

Mater. Trans.

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Effects of B and Cr additions on magnetostriction and the mechanical properties of polycrystalline Fe 83 Ga 17 alloy were investigated. Small addition of B increased magnetostriction of Fe 83 Ga 17 alloy slightly, and improved the room temperature ductility and tensile strength significantly. The elongation and tensile strength of the (Fe 83 Ga 17 ) 99 B 1 alloy increased to 3.56% and 548 MPa compared with that of Fe 83 Ga 17 alloy respectively. The Cr addition was shown to improve the room temperature mechanical properties of Fe 83 Ga 17 alloy beneficially. The maximum magnetostriction of (Fe 83 Ga 17 ) 98 Cr 2 alloy was 70 Â 10 À6 . The influences of B and Cr additions on the fracture mode of Fe 83 Ga 17 alloy were also studied in this paper.

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Section: Effect Of Cr Addition On Magnetostriction and The Mechanicalmentioning

confidence: 99%

Effect of B and Cr on Mechanical Properties and Magnetostriction of Iron-Gallium Alloy

Gao

Zhu

et al. 2009

Mater. Trans.

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“…The results of Santella and Patterson have shown a 10 decrease in the contact angle (from 134 to 124 ) after 10 min at 1092 C for the Cu-pure Fe 3 Al system, and contact angle data exhibited an equilibrium contact angle of 138 for the system with pure copper/alumina ceramic [16]. Moreover, they have observed diffusion of aluminum from the Fe 3 Al substrate to the sessile drops of silver and gold [5].…”

Section: Discussionmentioning

confidence: 99%

“…However, one of the most promising iron aluminide alloys developed at Oak Ridge National Laboratory is FA-129. The major alloying elements are Cr, Nb and C. Chromium changes the surface reaction, which reduces embrittlement in humid atmospheres [1][2][3]. Niobium and carbon are added to improve creep and high temperature strength by carbide strengthening [2].…”

Section: Introductionmentioning

confidence: 99%

Wetting behaviour of copper on an iron aluminide alloy

Brochu¹,

Pugh²,

Drew³

2004

Intermetallics

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“…Some early studies have shown that Fe 3 Al alloys are intrinsically ductile and their brittle behaviour is caused by environmental effects, i.e., moisture induced hydrogen embrittlement [10][11][12][13]. The addition of Cr improved the ductility of Fe 3 Al alloys under ambient environment [14,15]. Moreover, addition of Cr also improved corrosion resistance of the alloys [16].…”

Section: Introductionmentioning

confidence: 99%

The Tribological Behaviour of Fe–28Al–5Cr/TiC Under Liquid Paraffine Lubrication

Zhang

Yang

et al. 2011

Tribol Lett

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The tribological behaviour of Fe-28Al-5Cr and its composites containing 15, 25 and 50 wt% TiC (corresponding to 19.3, 31.2 and 57.6 vol%), produced by hot-pressing process, was investigated under liquid paraffine lubrication against an AISI 52100 steel ball in ambient environment at varied applied loads and sliding speeds. It was found that the wear resistance increased and friction coefficient decreased with increasing of TiC content. The coefficients of friction are in the range of 0.09-0.14 at the given testing conditions. The wear rates of all the materials except the 50% composite are on the order of 10 -6 -10 -5 mm 3 m -1 , the wear rate for the 50% composite is too low to quantify under the two sliding conditions, (50 N, 0.04 m/s) and (100 N, 0.02 m/s). The wear rates of all the materials increase as applied load increases and the increasing extent diminishes with the increase of TiC content, but first increase slightly and then nearly remains steadiness with increasing sliding speed. The 50 wt% composite has wear resistance about 7-20 times better than pure Fe-28Al-5Cr at different sliding parameters. The enhanced wear resistance by TiC addition is attributed to the high hardness of the composites, as well as support of the oil lubrication film/layer by the hard TiC phase. The worn surfaces of all the materials are analyzed by a scanning electron microscope. The dominant wear mechanism of the Fe-28Al-5Cr and 15% composite is grooving and flaking-off, but those of the 25 and 50% composites are mainly shallow grooving.

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Effect of the alloying element chromium on the room temperature ductility of Fe3Al intermetallics

Cited by 42 publications

References 12 publications

Effect of B and Cr on Mechanical Properties and Magnetostriction of Iron-Gallium Alloy

Effect of B and Cr on Mechanical Properties and Magnetostriction of Iron-Gallium Alloy

Wetting behaviour of copper on an iron aluminide alloy

The Tribological Behaviour of Fe–28Al–5Cr/TiC Under Liquid Paraffine Lubrication

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