2020
DOI: 10.1007/s11665-020-04673-5
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Microstructure Evolution and Mechanical Properties of Ti-6Al-4V Alloy Prepared by Multipass Equal Channel Angular Pressing

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Cited by 14 publications
(11 citation statements)
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“…As Figure 1 shows, the grain size of the Post-ECAP samples is smaller than the Pre-ECAP samples. Dislocations and deformation twins were induced during the ECAP process [ 29 , 30 ], which lead to dynamic recovery and dynamic recrystallization during the hot compression deformation process. Dynamic recovery is the main softening mechanism at 500 °C, as it is difficult to induce dynamic recrystallization at such a low temperature.…”
Section: Resultsmentioning
confidence: 99%
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“…As Figure 1 shows, the grain size of the Post-ECAP samples is smaller than the Pre-ECAP samples. Dislocations and deformation twins were induced during the ECAP process [ 29 , 30 ], which lead to dynamic recovery and dynamic recrystallization during the hot compression deformation process. Dynamic recovery is the main softening mechanism at 500 °C, as it is difficult to induce dynamic recrystallization at such a low temperature.…”
Section: Resultsmentioning
confidence: 99%
“…The grains of Post-ECAP samples had been refined by multi-pass ECAP [ 26 ]. The microstructure of the Post-ECAP sample is not stable and has lots of subgrains and twins [ 29 ]. However, the unstable microstructure transformed into a uniform and stable microstructure with fine equiaxed grains following further compression, which would be beneficial for the microstructure and mechanical properties of Ti-6Al-4V alloy.…”
Section: Discussionmentioning
confidence: 99%
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“…Bu çalışmada, iki tip kanal iç açısı kullanılmış olup, 90 o (Ψ=0°) ve 120 o (Ψ=10°) şeklindedir. 600 °C ve 700 °C gibi yüksek sıcaklıklarda gerçekleştirilen EKAP işleminin, numune boyunca nispeten homojen deformasyona neden olduğu önceki çalışmalarda açıkça ortaya konulmuştur (Zhao et al 2020). 15x15x130 mm 3 ölçülerine sahip, ısıl işlem fırınında 575°C sıcaklıkta 5 dakika süresince ön ısıtılmış numuneler 90° ve 120° kanal iç acısına sahip kalıplar kullanılarak çift paso EKAP işlemine tabi tutulmuştur.…”
Section: Ekap Prosesiunclassified
“…Evstifeev ve Valiev ise, Ti Grade 4 alaşımında EKAP aşırı plastik deformasyon işleminin malzemenin statik ve dinamik mekanik davranışına etkisini incelemişlerdir (Evstifeev and Valiev 2019). Zhao ve arkadaşları da, çoklu paso EKAP metodu ile üretilmiş çok ince taneli Ti-6Al-4V alaşımının mikroyapısal ve mekanik karakterizasyonunu detaylı bir şekilde gerçekleştirmişlerdir (Zhao et al 2020).…”
Section: Introductionunclassified