Yazar "Aktarer, Semih Mahmut" için listeleme
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Applicability of friction stir welding to steels
Çam, G.; Ipekoglu, G.; Küçükömeroglu, T.; Aktarer, Semih Mahmut (International OCSCO World Press, 2017)Purpose: The friction stir welding (FSW) method is widely considered to be one of the most significant developments in joining technology to emerge in the last 30 years. The technique has originally been developed for ... -
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 friction stir processing on tribological properties of Al-Si alloys
Aktarer, Semih Mahmut; Sekban, D.M.; Yanar, H.; Purcek, G. (Institute of Physics Publishing, 2017)As-cast Al-12Si alloy was processed by single-pass friction stir processing (FSP), and its effect on mainly friction and wear properties of processed alloy was studied in detail. The needle-shaped eutectic silicon particles ... -
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 ... -
Friction stir welding of low-carbon shipbuilding steel plates: Microstructure, mechanical properties, and corrosion behavior
Sekban, Dursun Murat; Aktarer, Semih Mahmut; Pürçek, Gencağa (Springer, 2019)In this study, low-carbon steel plates (ASTM 131A) used generally in shipbuilding applications were joined by friction stir welding (FSW) using optimum processing parameters. the microstructure, mechanical properties, ... -
Impact toughness of friction stir processed low carbon steel used in shipbuilding
Sekban, Dursun Murat; Aktarer, Semih Mahmut; Xue, Peng; Ma, Zong Yi; Pürçek, Gencağa (Elsevier Science Sa, 2016)Effect of single-pass friction stir processing (FSP) on the impact toughness of a low carbon steel mainly used in shipbuilding was investigated via Charpy impact test at different temperatures, and the results were correlated ... -
Improvement the wear behavior of low carbon steels by friction stir processing
Sekban, D.M.; Aktarer, Semih Mahmut; Yanar, H.; Alsaran, A.; Purcek, G. (Institute of Physics Publishing, 2017)A low carbon structural steel was surface-hardened by friction stir processing (FSP) through 4 mm thickness from the surface. The hardness of the alloy increased from 140 Hv0.1 to about 240 Hv0.1 after single-pass FSP. ... -
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 ... -
Microstructural and mechanical evolution of a low carbon steel by friction stir processing
Sekban, Dursun Murat; Aktarer, Semih Mahmut; Zhang, Hao; Xue, Peng; Ma, Zongyi; Pürçek, Gencağa (Springer, 2017)A low carbon steel (Grade A) was subjected to friction stir processing (FSP), and the effect of FSP on the microstructure and mechanical properties was investigated systematically. It was found that two distinct zones ... -
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 processed interstitial-free steel
Sekban, D.M.; Saray, O.; Aktarer, Semih Mahmut; Purcek, G.; Ma, Z.Y. (Elsevier Ltd, 2015)The microstructure, mechanical properties and stretch formability of fine-grained (FG) interstitial-free steel (IF-steel) formed by friction stir processing (FSP) was investigated systematically. One-pass FSP drastically ... -
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) ... -
Microstructure, microhardness and tensile properties of FSWed DP 800 steel
Küçükömeroğlu, T.; Aktarer, Semih Mahmut (International OCSCO World Press, 2017)Purpose: Dual phase (DP) steels are widely used in the automotive industry due to their properties of a high balance of strength and formability. However, it is known that conventional welding of high strength steel leads ... -
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. ... -
Tribological properties under dry and lubricated sliding conditions of TiSiN and AlTiCrN coatings deposited on gray cast iron
Aktarer, Semih Mahmut (Elsevier, 2024)In internal combustion engines, the majority of friction losses and wear occur between the cylinder liners and piston rings. Hard coatings applied to cylinder liners can increase the efficiency of internal combustion engines ...
