Severe plastic deformation induced nanocrystallization of melt-spun Al85Y8Ni5Co2 amorphous alloy

Henits, P.; Révész, Ádám; Zhilyaev, Alexander P.; Kovács, Zsolt

doi:10.1016/j.jallcom.2007.07.049

Cited by 32 publications

(16 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SPD also induces various phase transformations [12] such as formation [13][14][15] or decomposition [16][17][18][19][20] of supersaturated solid solution, dissolution of particles of a second solid phase [21][22][23][24][25][26], amorphization [27][28][29][30][31][32] and nanocrystallization [33][34][35]. Among this variety, very interesting are the phase transformations with formation of high-pressure phases.…”

Section: Introductionmentioning

confidence: 99%

The α → ω Transformation in Titanium-Cobalt Alloys under High-Pressure Torsion

Kilmametov

Ivanisenko

Straumal

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The pressure influence on the α → ω transformation in Ti-Co alloys has been studied during high pressure torsion (HPT). The α → ω allotropic transformation takes place at high pressures in titanium, zirconium and hafnium as well as in their alloys. The transition pressure, the ability of high pressure ω-phase to retain after pressure release, and the pressure interval where α and ω phases coexist depend on the conditions of high-pressure treatment. During HPT in Bridgeman anvils, the high pressure is combined with shear strain. The presence of shear strain as well as Co addition to Ti decreases the onset of the α → ω transition from 10.5 GPa (under quasi-hydrostatic conditions) to about 3.5 GPa. The portion of ω-phase after HPT at 7 GPa increases in the following sequence: pure Ti → Ti-2 wt % Co → Ti-4 wt % Co → Ti-4 wt % Fe.

show abstract

Section: Introductionmentioning

confidence: 99%

The α → ω Transformation in Titanium-Cobalt Alloys under High-Pressure Torsion

Kilmametov

Ivanisenko

Straumal

et al. 2017

Metals

View full text Add to dashboard Cite

show abstract

“…[3][4][5][6][7][8][9][10][11][12][13][14][15] The application includes the consolidation of metallic powders, [3][4][5] composites, [6][7][8][9][10][11][12] ball-milled powders, 13,14) amorphous powders, 15) amorphous ribbons, 16) and very recently machining chips. 17,18) Strain-induced amorphization was reported for some compounds, 19,20) whereas crystallization is detected in amorphous materials such as Cu 50 [21][22][23][24][25][26][27][28][29][30][31] It is well established that bulk amorphous materials have high strengths and high hardness [32][33][34][35] and it is known that processing through HPT leads to an increase in the strength of metallic materials. 1,<...>…”

Section: Introductionmentioning

confidence: 99%

“…17,18) Strain-induced amorphization was reported for some compounds, 19,20) whereas crystallization is detected in amorphous materials such as Cu 50 [21][22][23][24][25][26][27][28][29][30][31] It is well established that bulk amorphous materials have high strengths and high hardness [32][33][34][35] and it is known that processing through HPT leads to an increase in the strength of metallic materials. 1,2) In spite of many publications regarding the HPT processing of amorphous materials, [21][22][23][24][25][26][27][28][29][30][31] little attention has been paid to the strength of amorphous materials after processing by HPT.…”

Section: Introductionmentioning

confidence: 99%

High-Pressure Torsion of Machining Chips and Bulk Discs of Amorphous Zr50Cu30Al10Ni10

2010

View full text Add to dashboard Cite

Machining chips and bulk discs of an amorphous Zr 50 Cu 30 Al 10 Ni 10 alloy were processed by high-pressure torsion (HPT). It was confirmed that the machining chips can be consolidated using HPT at room temperature to disc-shaped samples with 10 mm diameter and 0.6 mm thickness having a relative density of 96.7%. The hardness for the consolidated chips was well comparable to those obtained using the bulk samples when the imposed strain is large. No crystallization was detected after HPT processing of chips and bulk samples.

show abstract

“…Numerous glassy Al-RE (La, Y, Ce)-TM (Fe, Co, Ni) type alloys have been synthesized and investigated over the past two decades showing fracture strength up to 1.3 GPa [4][5][6][7][8][9]. The strength of some Al-RE-TM alloys could be even further improved by the creation of dispersion-strengthened structures via partial crystallization and formation of uniformly distributed nanograins in the amorphous matrix [10][11][12].…”

Section: Introductionmentioning

confidence: 99%