Aluminum Alloying Effects on Lattice Types, Microstructures, and Mechanical Behavior of High-Entropy Alloys Systems

Tang, Zijian; Gao, Michael C.; Diao, Hui; Yang, Tonghai; Liu, Jun Peng; Zuo, Tingting; Zhang, Yong; Liu, Xiongjun; Cheng, Yongqiang; Zhang, Yongfeng; Dahmen, Karin A.; Liaw, Peter K.; Egami, T.

doi:10.1007/s11837-013-0776-z

Cited by 265 publications

(91 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where the Z i are the order parameters defined in equation (11). The observed parameter, d obs , may be found by fitting the experimental diffraction data to a B2 crystal model, where the site occupancy is expressed in terms of d. Thus, in accordance with equations (21) and (22), the occupancy of the site at the origin of the unit cell is given by 1 þ d and the occupancy of the site at the centre of the unit cell, (½, ½, ½), is given by 1 À d. Both sites are occupied, nominally, by the same element (here Al is chosen).…”

Section: Methodsmentioning

confidence: 99%

“…Many multi-principal-element alloys have shown exceptional properties, including high strengths at elevated temperatures 6,8,[10][11][12][13][14][15] , ductility 16,17 , toughness 18 , resistance to corrosion 19,20 , wear 21 and fatigue 22 . These favourable properties are sometimes associated with the locally strained solid solution structures, especially those with simple, single-phase microstructures 5,23,24 .…”

mentioning

confidence: 99%

See 1 more Smart Citation

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

et al. 2015

Self Cite

View full text Add to dashboard Cite

The alloy-design strategy of combining multiple elements in near-equimolar ratios has shown great potential for producing exceptional engineering materials, often known as 'high-entropy alloys'. Understanding the elemental distribution, and, thus, the evolution of the configurational entropy during solidification, is undertaken in the present study using the Al 1.3 CoCrCuFeNi model alloy. Here we show that, even when the material undergoes elemental segregation, precipitation, chemical ordering and spinodal decomposition, a significant amount of disorder remains, due to the distributions of multiple elements in the major phases. The results suggest that the high-entropy alloy-design strategy may be applied to a wide range of complex materials, and should not be limited to the goal of creating single-phase solid solutions.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…The most commonly-used transition elements include Cu, Al, Ni, Fe, Cr, Ti, Co, et al HEAs with improved mechanical and functional properties were investigated during the past several years [5][6][7][8][9][10]. Some new HEAs were fabricated, for example, single-crystal, micro-and nano-wire scale HEAs, and their properties were investigated [11,12].…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Crackling Noise of AlxNbTiMoV High Entropy Alloys

Chen

Yang

Dahmen

et al. 2014

Entropy

Self Cite

135

View full text Add to dashboard Cite

A series of high entropy alloys (HEAs), Al x NbTiMoV, was produced by a vacuum arc-melting method. Their microstructures and compressive mechanical behavior at room temperature were investigated. It has been found that a single solid-solution phase with a body-centered cubic (BCC) crystal structure forms in these alloys. Among these alloys, Al 0.5 NbTiMoV reaches the highest yield strength (1,625 MPa), which should be attributed to the considerable solid-solution strengthening behavior. Furthermore, serration and crackling noises near the yielding point was observed in the NbTiMoV alloy, which represents the first such reported phenomenon at room temperature in HEAs.

show abstract

“…Recently, a novel class of advanced structural materials, called High-Entropy Alloys (HEAs) or Multi-Principal-Element Alloys (MPEAs), has been proposed and developed [5][6][7][8][9][10][11][12][13][14][15][16][17]. Compared with conventional alloys containing one or two principal elements, HEAs are usually composed of five or more elements with equimolar or near equimolar elemental fractions, which form disordered solidsolution phases, specifically body-centered-cubic (BCC) and/or face-centered-cubic (FCC) phases.…”

mentioning

confidence: 99%

Alloying and Processing Effects on the Aqueous Corrosion Behavior of High-Entropy Alloys

Tang

Huang

et al. 2014

Entropy

Self Cite

164

View full text Add to dashboard Cite

Abstract:The effects of metallurgical factors on the aqueous corrosion behavior of highentropy alloys (HEAs) are reviewed in this article. Alloying (e.g., Al and Cu) and processing (e.g., heat treatments) effects on the aqueous corrosion behavior of HEAs, including passive film formation, galvanic corrosion, and pitting corrosion, are discussed in detail. Corrosion rates of HEAs are calculated using electrochemical measurements and the weight-loss method. Available experimental corrosion data of HEAs in two common solutions [sulfuric acid (0.5 M H 2 SO 4 ) and salt water (3.5 weight percent, wt.%, NaCl)], such as the corrosion potential (E corr ), corrosion current density (i corr ), pitting potential (E pit ), and passive region (ΔE), are summarized and compared with conventional corrosionresistant alloys. Possible directions of future work on the corrosion behavior of HEAs are suggested.

show abstract

Aluminum Alloying Effects on Lattice Types, Microstructures, and Mechanical Behavior of High-Entropy Alloys Systems

Cited by 265 publications

References 76 publications

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

Microstructures and Crackling Noise of AlxNbTiMoV High Entropy Alloys

Alloying and Processing Effects on the Aqueous Corrosion Behavior of High-Entropy Alloys

Contact Info

Product

Resources

About