Husain Hraam - Academia.edu (original) (raw)
Papers by Husain Hraam
Technological Applied Sciences, Jul 8, 2019
ZrO2-8% Y2O3 KAPLAMALARIN MİKROYAPI VE MEKANİK ÖZELLİKLERİ ÜZERİNE ISIL İŞLEMİN ETKİSİ ÖZ Bu çalı... more ZrO2-8% Y2O3 KAPLAMALARIN MİKROYAPI VE MEKANİK ÖZELLİKLERİ ÜZERİNE ISIL İŞLEMİN ETKİSİ ÖZ Bu çalışmada, plazma sprey yöntemi ile AISI 316L üzerinde üretilmiş ZrO2-%8 Y2O3 kaplamaların mikroyapı ve mekanik özellikleri üzerine ısıl işlemin etkisi araştırılmıştır. Seramik kaplamalar, 900°C, 1000°C ve 1100°C sıcaklıklarda ısıl işlem prosesine tabi tutulmuştur. Kaplama tabakalarının faz bileşimi ve mikroyapısı X-ışını difraktogramı (XRD) ve taramalı elektron mikroskobu (SEM) ile incelenmiştir. Kaplamaların aşınma özellikleri ASTM G133 test standartları referans alınarak aşınma test cihazında ball on disk yöntemi ile test edilmiştir. SEM çalışmalarına göre, en fazla gözenek oluşumu ısıl işlemsiz numunede görülürken, ısıl işlem sıcaklığı arttıkça gözenek miktarının azaldığı tespit edilmiştir. Fakat ısıl işlemin arayüzey bağlanmasına olumsuz etki ettiği de kaçınılmaz bir sonuç olarak elde edilmiştir. Kaplama mikroyapısında t-ZrO2 ve c-ZrO2 fazlarının oluştuğu XRD analizlerinden belirlenmiştir. Sonuçlar, ısıl işlem sıcaklığının artmasıyla, kaplamaların sertliklerinde artış olduğunu ve sürtünme katsayılarında ve aşınma oranlarında ise azalma meydana geldiğini göstermiştir.
Springer eBooks, Jan 4, 2008
ABSTRACT
Research on engineering structures & materials, 2019
Disclaimer All the opinions and statements expressed in the papers are on the responsibility of a... more Disclaimer All the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means. Published articles are freely available to users under the terms of Creative Commons Attribution-NonCommercial 4.0 International Public License, as currently displayed at here (the "CC BY-NC").
Research on engineering structures & materials, 2019
Disclaimer All the opinions and statements expressed in the papers are on the responsibility of a... more Disclaimer All the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means. Published articles are freely available to users under the terms of Creative Commons Attribution-NonCommercial 4.0 International Public License, as currently displayed at here (the "CC BY-NC").
Metallography, Microstructure, and Analysis, Jun 12, 2023
In the present study, Ti-Cu-based alloys were provided by the simultaneous application of both re... more In the present study, Ti-Cu-based alloys were provided by the simultaneous application of both reactive melt infiltration and liquid phase sintering techniques. In order to apply the reactive melt infiltration technique, stearic acid was added at 10, 15, and 20% by weight as the pore forming agent in titanium. Cold-pressed samples were subjected to two different sintering temperatures (1100 and 1200 °C), and melt copper was provided to leak between the titanium particles, natural pores, and the pores forming upon the vaporization of stearic acid. According to the microstructure results, two types of microstructure (eutectoid and hypereutectoid) formed. Eutectoid structure consists of formation of α-Ti + Ti 2 Cu. The presence of Ti 2 Cu intermetallic phase caused an increase in hardness. While the increase in the sintering temperature increased transverse rupture strength, the increased amount of copper caused a decrease due to pore formation (natural pores and pores produced). According to the morphology of the surface of fracture, brittle transgranular and partially ductile fractures occurred in the samples. In summary, it was found that 20% Cu amount and 1200 °C were the most suitable in terms of hardness and relative density, while pure titanium had the highest TRS value at 1200 °C.
Fracture of Nano and Engineering Materials and Structures
ABSTRACT
Metallography, Microstructure, and Analysis, Oct 24, 2022
Metallography, Microstructure, and Analysis
Research on Engineering Structures and Materials, 2019
Technological Applied Sciences, 2019
Bu calismada, plazma sprey yontemi ile AISI 316L uzerinde uretilmis ZrO 2 -%8 Y 2 O 3 kaplamalari... more Bu calismada, plazma sprey yontemi ile AISI 316L uzerinde uretilmis ZrO 2 -%8 Y 2 O 3 kaplamalarin mikroyapi ve mekanik ozellikleri uzerine isil islemin etkisi arastirilmistir. Seramik kaplamalar, 900°C, 1000°C ve 1100°C sicakliklarda isil islem prosesine tabi tutulmustur. Kaplama tabakalarinin faz bilesimi ve mikroyapisi X-isini difraktogrami (XRD) ve taramali elektron mikroskobu (SEM) ile incelenmistir. Kaplamalarin asinma ozellikleri ASTM G133 test standartlari referans alinarak asinma test cihazinda ball on disk yontemi ile test edilmistir. SEM calismalarina gore, en fazla gozenek olusumu isil islemsiz numunede gorulurken, isil islem sicakligi arttikca gozenek miktarinin azaldigi tespit edilmistir. Fakat isil islemin arayuzey baglanmasina olumsuz etki ettigi de kacinilmaz bir sonuc olarak elde edilmistir. Kaplama mikroyapisinda t-ZrO 2 ve c-ZrO 2 fazlarinin olustugu XRD analizlerinden belirlenmistir. Sonuclar, isil islem sicakliginin artmasiyla, kaplamalarin sertliklerinde artis...
Disclaimer All the opinions and statements expressed in the papers are on the responsibility of a... more Disclaimer All the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means.
E-journal of New World Sciences Academy
Technological Applied Sciences, Jul 8, 2019
ZrO2-8% Y2O3 KAPLAMALARIN MİKROYAPI VE MEKANİK ÖZELLİKLERİ ÜZERİNE ISIL İŞLEMİN ETKİSİ ÖZ Bu çalı... more ZrO2-8% Y2O3 KAPLAMALARIN MİKROYAPI VE MEKANİK ÖZELLİKLERİ ÜZERİNE ISIL İŞLEMİN ETKİSİ ÖZ Bu çalışmada, plazma sprey yöntemi ile AISI 316L üzerinde üretilmiş ZrO2-%8 Y2O3 kaplamaların mikroyapı ve mekanik özellikleri üzerine ısıl işlemin etkisi araştırılmıştır. Seramik kaplamalar, 900°C, 1000°C ve 1100°C sıcaklıklarda ısıl işlem prosesine tabi tutulmuştur. Kaplama tabakalarının faz bileşimi ve mikroyapısı X-ışını difraktogramı (XRD) ve taramalı elektron mikroskobu (SEM) ile incelenmiştir. Kaplamaların aşınma özellikleri ASTM G133 test standartları referans alınarak aşınma test cihazında ball on disk yöntemi ile test edilmiştir. SEM çalışmalarına göre, en fazla gözenek oluşumu ısıl işlemsiz numunede görülürken, ısıl işlem sıcaklığı arttıkça gözenek miktarının azaldığı tespit edilmiştir. Fakat ısıl işlemin arayüzey bağlanmasına olumsuz etki ettiği de kaçınılmaz bir sonuç olarak elde edilmiştir. Kaplama mikroyapısında t-ZrO2 ve c-ZrO2 fazlarının oluştuğu XRD analizlerinden belirlenmiştir. Sonuçlar, ısıl işlem sıcaklığının artmasıyla, kaplamaların sertliklerinde artış olduğunu ve sürtünme katsayılarında ve aşınma oranlarında ise azalma meydana geldiğini göstermiştir.
Springer eBooks, Jan 4, 2008
ABSTRACT
Research on engineering structures & materials, 2019
Disclaimer All the opinions and statements expressed in the papers are on the responsibility of a... more Disclaimer All the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means. Published articles are freely available to users under the terms of Creative Commons Attribution-NonCommercial 4.0 International Public License, as currently displayed at here (the "CC BY-NC").
Research on engineering structures & materials, 2019
Disclaimer All the opinions and statements expressed in the papers are on the responsibility of a... more Disclaimer All the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means. Published articles are freely available to users under the terms of Creative Commons Attribution-NonCommercial 4.0 International Public License, as currently displayed at here (the "CC BY-NC").
Metallography, Microstructure, and Analysis, Jun 12, 2023
In the present study, Ti-Cu-based alloys were provided by the simultaneous application of both re... more In the present study, Ti-Cu-based alloys were provided by the simultaneous application of both reactive melt infiltration and liquid phase sintering techniques. In order to apply the reactive melt infiltration technique, stearic acid was added at 10, 15, and 20% by weight as the pore forming agent in titanium. Cold-pressed samples were subjected to two different sintering temperatures (1100 and 1200 °C), and melt copper was provided to leak between the titanium particles, natural pores, and the pores forming upon the vaporization of stearic acid. According to the microstructure results, two types of microstructure (eutectoid and hypereutectoid) formed. Eutectoid structure consists of formation of α-Ti + Ti 2 Cu. The presence of Ti 2 Cu intermetallic phase caused an increase in hardness. While the increase in the sintering temperature increased transverse rupture strength, the increased amount of copper caused a decrease due to pore formation (natural pores and pores produced). According to the morphology of the surface of fracture, brittle transgranular and partially ductile fractures occurred in the samples. In summary, it was found that 20% Cu amount and 1200 °C were the most suitable in terms of hardness and relative density, while pure titanium had the highest TRS value at 1200 °C.
Fracture of Nano and Engineering Materials and Structures
ABSTRACT
Metallography, Microstructure, and Analysis, Oct 24, 2022
Metallography, Microstructure, and Analysis
Research on Engineering Structures and Materials, 2019
Technological Applied Sciences, 2019
Bu calismada, plazma sprey yontemi ile AISI 316L uzerinde uretilmis ZrO 2 -%8 Y 2 O 3 kaplamalari... more Bu calismada, plazma sprey yontemi ile AISI 316L uzerinde uretilmis ZrO 2 -%8 Y 2 O 3 kaplamalarin mikroyapi ve mekanik ozellikleri uzerine isil islemin etkisi arastirilmistir. Seramik kaplamalar, 900°C, 1000°C ve 1100°C sicakliklarda isil islem prosesine tabi tutulmustur. Kaplama tabakalarinin faz bilesimi ve mikroyapisi X-isini difraktogrami (XRD) ve taramali elektron mikroskobu (SEM) ile incelenmistir. Kaplamalarin asinma ozellikleri ASTM G133 test standartlari referans alinarak asinma test cihazinda ball on disk yontemi ile test edilmistir. SEM calismalarina gore, en fazla gozenek olusumu isil islemsiz numunede gorulurken, isil islem sicakligi arttikca gozenek miktarinin azaldigi tespit edilmistir. Fakat isil islemin arayuzey baglanmasina olumsuz etki ettigi de kacinilmaz bir sonuc olarak elde edilmistir. Kaplama mikroyapisinda t-ZrO 2 ve c-ZrO 2 fazlarinin olustugu XRD analizlerinden belirlenmistir. Sonuclar, isil islem sicakliginin artmasiyla, kaplamalarin sertliklerinde artis...
Disclaimer All the opinions and statements expressed in the papers are on the responsibility of a... more Disclaimer All the opinions and statements expressed in the papers are on the responsibility of author(s) and are not to be regarded as those of the journal of Research on Engineering Structures and Materials (RESM) organization or related parties. The publishers make no warranty, explicit or implied, or make any representation with respect to the contents of any article will be complete or accurate or up to date. The accuracy of any instructions, equations, or other information should be independently verified. The publisher and related parties shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with use of the information given in the journal or related means.
E-journal of New World Sciences Academy