Yazar "Küçükömeroğlu, Tevfik" için listeleme
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CdSe thin films-based photodetector doped with Cu, In and Ga atoms: a comparative work
Yılmaz, S.; Polat, İrem; Tomakin, Murat; Küçükömeroğlu, Tevfik; Bacaksız, Emin (Springer, 2023)The present work demonstrates a comparison of performance of Cu, In and Ga-doped CdSe thin films-based photodetectors. Structural, morphological, optical and electrical investigation of Cu, In and Ga-doped CdSe thin films ... -
Effect of friction stir process on hole expansion behavior of dual phase steel
Aktarer, Semih Mahmut; Acar, Doğan; Küçükömeroğlu, Tevfik (Springer, 2023)The influence of the friction stir process (FSP) on the hole expansion formability of dual-phase 600 steel was examined by experimental and finite element analyses. Due to the microstructure of refining ferrite, martensite, ... -
Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloy
Aktarer, Semih M.; Sekban, Dursun Murat; Saray, Onur; Küçükömeroğlu, Tevfik; Ma, Zong Yi; Pürçek, Gençağa (Elsevier Science Sa, 2015)The effect of two-pass friction stir processing (FSP) on the microstructural evolution, mechanical properties and impact toughness of as-cast Al-12Si alloy was investigated systematically. Severe plastic deformation imposed ... -
Formability behavior of friction stir processed dual phase steel
Aktarer, Semih Mahmut; Küçükömeroğlu, Tevfik (EDP Sciences, 2021)This study investigated the formability behavior of dual-phase (DP) steel subjected to friction stir process (FSP), using a miniaturized Erichsen test. The friction stir process yielded a refined microstructure, which ... -
Friction stir processing of dual phase steel: Microstructural evolution and mechanical properties
Aktarer, Semih Mahmut; Küçükömeroğlu, Tevfik; Davut, Kemal (Elsevier Science Inc, 2019)The influence of friction stir processing (FSP) on the microstructure and mechanical properties of a DP 600 steel has been studied. the microstructure evolution during the FSP has been characterized using electron back ... -
Growth of Cu2ZnSnS4 (CZTS) thin films using short sulfurization periods
Olgar, Mehmet Ali; Tomakin, Murat; Küçükömeroğlu, Tevfik; Bacaksız, Emin (Iop Publishing Ltd, 2019)In this study CZTS thin films were grown by a two-stage process that involved sequential sputter deposition of metallic Cu, Zn, and Sn layers on Mo coated glass substrates followed by RTP annealing at 530 and 560 degrees ... -
Investigation of mechanical and microstructural properties of friction stir welded dual phase (DP) steel
Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; Çam, Gürel (Iop Publishing Ltd, 2019)The application of dual phase (DP) steels has been increasing significantly in the automotive industry because of their high strength as well as good ductility, thus, cold formability. These steels are generally joined ... -
Investigation of microstructure and mechanical properties of friction stir welded dissimilar St37/St52 joints
İpekoğlu, Güven; Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; Sekban, Dursun Murat; Çam, Gürel (Iop Publishing Ltd, 2019)Although friction stir welding (FSW) has widely been applied to aluminum alloys in several industries over the past three decades, it is not yet used in industry for joining of steels. the aim of this study is to characterize ... -
Mechanical properties of friction stir welded St 37 and St 44 steel joints
Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; İpekoğlu, Güven; Cam, Gürel (Carl Hanser Verlag, 2018)In this study, the weldability of lower strength St 37 grade steel plate with a higher strength steel plate (i. e., St 44) using the friction stir welding technique has been studied. St 37 grade steel sheets are widely ... -
Microstructure and mechanical properties of friction-stir welded St52 steel joints
Küçükömeroğlu, Tevfik; Aktarer, Semih Mahmut; İpekoğlu, Güven; Cam, Gürel (Springer, 2018)The aim of this work is to investigate the mechanical properties and microstructures of friction-stir welded (FSWed) St52 structural steel joints. in this study, St52 steel plates with a thickness of 4 mm were butt-welded ... -
Microstructure, mechanical properties and formability of friction stir welded dissimilar materials of IF-steel and 6061 Al alloy
Aktarer, Semih Mahmut; Sekban, Dursun Murat; Küçükömeroğlu, Tevfik; Pürçek, Gençağa (Springer, 2019)AA 6061 alloy and interstitial-free (IF) steel plates were joined by the friction stir welding (FSW) method, and the microstructure, mechanical properties, and biaxial stretch formability of the friction stir welded (FSWed) ... -
Sürtünme Karıştırma Kaynağıyla Birleştirilen St37/St52 Levhaların Mikroyapı Karakterizasyonu ve Mekanik Özellikleri
Sürtünme Karıştırma Kaynağı (SKK), geçtiğimiz otuz yılda çeşitli endüstrilerde alüminyum alaşımlarına başarı ile uygulanmaktadır. Fakat çeliklerin kaynağında, bu işlemlerde açığa çıkan sıcaklıklara dayanabilecek karıştırıcı ... -
Texture evolution of friction stir-processed dual-phase steel
Aktarer, Semih Mahmut; Küçükömeroğlu, Tevfik; Davut, Kemal (Springer, 2022)Evolution of crystallographic texture and local strains in different zones of a dual-phase steel subjected to severe plastic deformation by friction stir process was examined by electron backscatter diffraction technique. ...
