Investigation of the rotary swaging and heat treatment on the behavior of W- and γ-phases in PM 92.5W–5Ni–2.5Fe–0.26Co heavy alloy

Katavić, Boris; Odanović, Zoran; Burzić, Meri

doi:10.1016/j.msea.2008.05.021

Cited by 47 publications

(15 citation statements)

References 9 publications

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“…Increasing the amount of deformation results a considerable enhancement in tensile strength with substantial reduction in ductility [11,14,15,18,19].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The increase in tensile strength and decrease in ductility is due to strain hardening of the binder phase and tungsten grains [11,13,18]. For swaging deformations up to 15%, strain hardening is mainly due to higher hardening rate of the binder phase [18].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…In the processing of tungsten heavy alloys, for applications which require higher tensile strength and hardness, post sintering operations such as cold rolling [11], swaging [12][13][14][15][16][17][18][19][20] and extrusion [21][22][23] have been used. Cold deformation of sintered tungsten heavy alloys increases the dislocation density which in turn leads to improvement in tensile strength and hardness due to strain hardening.…”

mentioning

confidence: 99%

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Effect of swaging on microstructure and tensile properties of W–Ni–Fe alloys

Durlu

Çalışkan

Bor

2014

International Journal of Refractory Metals and Hard Materials

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“…Increasing the amount of deformation results a considerable enhancement in tensile strength with substantial reduction in ductility [11,14,15,18,19].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Effect of swaging on microstructure and tensile properties of W–Ni–Fe alloys

Durlu

Çalışkan

Bor

2014

International Journal of Refractory Metals and Hard Materials

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“…Besides these techniques there are also rather conventional methods such as hydrostatic extrusion or swaging which may also lead to signicant grain renements [3,4].…”

Section: Introductionmentioning

confidence: 99%

Grain Refinement after Various Thermo-Mechanical Treatments in AZ80 and ZK60 Magnesium Alloys

et al. 2012

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The eect of thermal processing prior to severe plastic deformation by extrusion and swaging on grain renement in ZK60 and AZ80 alloys was studied. The alloys received in direct-chill cast condition were homogenized at 415• C and annealed (over-aged) at temperatures from 200 to 380• C. Both the direct-hill cast and over-aged conditions were extruded at T = 300• C using an extrusion ratio of ER = 19. Hot extrusion resulted in substantial grain renement in both cases, the eect being stronger in the over-aged material. The extruded bars were severe plastically deformed at 250• C by swaging. Swaging rened further the grain size depending on the deformation ratio (number of passes). At optimal processing conditions the grain size was 450 nm and 570 nm for the AZ80 and ZK60 alloys, respectively.

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“…So they have the advantages of smooth outer surface finish, less material usage, refined fiber structure, and minimum notch effect. Therefore, they can be used for solid shafts and tubular products fabrication [5][6][7][8]. The development of radial forging has been well reviewed by Chen et al [9], and the development of rotary swaging has been well reviewed by Lim et al [10].…”

Section: Introductionmentioning

confidence: 99%

Slave rotation analysis of miniature inner grooved copper tube through rotary swaging process

Dong

Tang

et al. 2011

Int J Adv Manuf Technol

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Miniature inner grooved copper tube (MIGCT) is widely applied in industries. To overcome the weak rigidity and strength of MIGCT during stepped tubes manufacturing, rotary swaging process was selected after comparing with radial forging process. The working principle of the rotary swaging was analyzed. A rotary swaging machine, whose workpiece feeding and clamping was respectively driven by an air cylinder and a finger cylinder, was designed. Experiments indicate that the MIGCT was slave rotating with forging dies during rotary swaging. Theoretical analysis was done to investigate the reason of the slave rotation. Experiments were carried out to verify the theoretical analysis. Furthermore, the influences of push force and clamping force on rotation speed were discussed. With the increase of clamping force, the rotation speed of MIGCT decreases gradually in a constant ratio. However, the push force influences the tube rotation speed slightly. In general, it found that an optimal rotation speed of MIGCT is beneficial to the manufacture of the stepped tube.

show abstract

Investigation of the rotary swaging and heat treatment on the behavior of W- and γ-phases in PM 92.5W–5Ni–2.5Fe–0.26Co heavy alloy

Cited by 47 publications

References 9 publications

Effect of swaging on microstructure and tensile properties of W–Ni–Fe alloys

Effect of swaging on microstructure and tensile properties of W–Ni–Fe alloys

Grain Refinement after Various Thermo-Mechanical Treatments in AZ80 and ZK60 Magnesium Alloys

Slave rotation analysis of miniature inner grooved copper tube through rotary swaging process

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