Filtreler
Filtreler
Bulunan: 4 Adet 0.052 sn
Konu Başlıkları : Hot Tearing ✕
Koleksiyon [4]
İlgili Araştırmacılar [1]
Ambargo Durumu [1]
Tam Metin [1]
Yayın Türü [2]
Yazar/lar [4]
Atıf Dizini [2]
Konu Başlıkları [21]
Yayıncı [4]
Dergi Adı [2]
Yayın Tarihi [3]
Dergi Sayısı [2]
Yayın Dili [1]
Erişime Açık

Effect Of Degassing And Grain Refinement On Hot Tearing Tendency In Al8Si3Cu Alloy

ULUDAĞ, Muhammet | ÇETİN, Remzi | DIŞPINAR, Derya | TİRYAKİOĞLU, Murat

The effect of melt quality on hot tearing susceptibility of Al8Si3Cu alloy was examined under six different conditions, by using a traditional T-shaped mold. Grain refinement was carried out by two different modifiers: AlTi5B1 and Al3B. For each test, samples were cast before and after degassing of melt. Therefore, a new hot tearing tendency index was developed by both bifilm calculations and porosity that occurred in the middle of T-zone of casting parts. Results indicated that hot tearing of cast aluminum alloys was a complex phenomenon, and bifilms play a major role, especially by compensat ...Daha fazlası

Makale 2018 Springer International Publishing3 ( 12 ) , pp. 5 - 595 3 Görüntülenme
Erişime Açık

Bifilms And Hot Tearing Of Al-Si Alloys

ÇETİN, Remzi | ULUDAĞ, Muhammet | DIŞPINAR, Derya

Hot tearing is one of the most interesting defects that can be found during casting of aluminium alloys. The definition of this defects has some uncertainties such as “it does not always appear under apparently identical conditions” or “the defect is highly specific to certain alloys”. There are several works in the literature on the modelling and analytical approaches. However, the experimental findings have not been satisfactory. In this work, A356, A380 and A413 alloys were cast in two different moulds to investigate the hot tearing tendency with regard to the melt quality. It was found tha ...Daha fazlası

Konferans Bildirisi 2016 Shape Cutlng: 6th lntenudlmud Symposiam, Springer Link 68 Görüntülenme
Erişime Açık

The Effects Of Degassing, Grain Refinement & Sr-Addition On Melt Quality-Hot Tear Sensitivity Relationships İn Cast A380 Aluminum Alloy

ULUDAĞ, Muhammet | ÇETİN, Remzi | DIŞPINAR, Derya | TİRYAKİOĞLU, Murat

Hot tearing tendency of A380 with various element additions (Sr, Sr+Ti, Ti, B and B+Sr) was investigated. Constrained rod casting (CRC) hot tearing test method was used to characterize the hot tearing sensitivity. Reduced pressure test (RPT) samples were produced from each condition and all trials were repeated three times. Number density of pores on the cross section of RPT samples was calculated via digital image processing and statistical analysis was carried out. Microstructure analysis was carried out to observe the effect of alloying elements. Hot torn cross sections were subjected to SE ...Daha fazlası

Makale 2018 Engineering Failure Analysis ( 90 ) , pp. 9 - 102 69 Görüntülenme
Erişime Açık

Observation of Hot Tearing in Sr-B Modified A356 Alloy

ULUDAĞ, Muhammet | ÇETİN, Remzi | DIŞPINAR, Derya

In this work, T-shaped mould design was used to generate hot spot and the effect of Sr and B on the hot tearing susceptibility of A356 was investigated. The die temperature was kept at 250°C and the pouring was carried out at 740°C. The amonut of Sr and B additions were 30 and 10 ppm, respectively. One of the most important defects that may exist in cast aluminium is the presence of bifilms. Bifilms can form by the surface turbulence of liquid metal. During such an action, two unbonded surfaces of oxides fold over each other which act as a crack. Therefore, this defect cause many problems in t ...Daha fazlası

Makale 2017 De Gruyter Open Ltd 54 Görüntülenme
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