A HRTEM-EDS-SAED Study of Precipitates in Mg-Zn-Zr Alloy

Ozgur Duygulu

Makale detayları

A HRTEM-EDS-SAED Study of Precipitates in Mg-Zn-Zr Alloy

Yazarlar:

Ozgur Duygulu

Yayıncı:

Duzce University

Ana Başlıklar:

Malzeme Tasarım ve Davranışları

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 3, pp.1752-1761

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001323948

pISSN:

2148-2446

Anahtar kelimeler:

Özet:

 In this study, aging heat treatment was performed on extruded Mg-Zn-Zr alloy. Aging was performed on as-extruded samples at 180C for 1-2-4-8 and 24 hours. Microhardness tests were made to obtain the aging curve. Detailed transmission electron microscopy TEM examinations such as selected area electron diffraction SAED, energy dispersive spectrometry EDS, and high resolution transmission electron microscopy HRTEM were used to investigate the microstructure, second phases, and precipitates. Size, type, and morphologies of second phases and precipitates were studied aided by advanced transmission electron microscopy techniques. With the help of hardness test results peak aged condition was found to be 8 hour aging. TEM examinations were detailed for the 8-hour aged sample. It was observed that the precipitates responsible for age hardening were MgZn2. Moreover, the majority of these precipitates were β1 phase.

 In this study, aging heat treatment was performed on extruded Mg-Zn-Zr alloy. Aging was performed on as-extruded samples at 180C for 1-2-4-8 and 24 hours. Microhardness tests were made to obtain the aging curve. Detailed transmission electron microscopy TEM examinations such as selected area electron diffraction SAED, energy dispersive spectrometry EDS, and high resolution transmission electron microscopy HRTEM were used to investigate the microstructure, second phases, and precipitates. Size, type, and morphologies of second phases and precipitates were studied aided by advanced transmission electron microscopy techniques. With the help of hardness test results peak aged condition was found to be 8 hour aging. TEM examinations were detailed for the 8-hour aged sample. It was observed that the precipitates responsible for age hardening were MgZn2. Moreover, the majority of these precipitates were β1 phase.

 In this study, aging heat treatment was performed on extruded Mg-Zn-Zr alloy. Aging was performed on as-extruded samples at 180C for 1-2-4-8 and 24 hours. Microhardness tests were made to obtain the aging curve. Detailed transmission electron microscopy TEM examinations such as selected area electron diffraction SAED, energy dispersive spectrometry EDS, and high resolution transmission electron microscopy HRTEM were used to investigate the microstructure, second phases, and precipitates. Size, type, and morphologies of second phases and precipitates were studied aided by advanced transmission electron microscopy techniques. With the help of hardness test results peak aged condition was found to be 8 hour aging. TEM examinations were detailed for the 8-hour aged sample. It was observed that the precipitates responsible for age hardening were MgZn2. Moreover, the majority of these precipitates were β1 phase.

 Bu çalışmada, ekstrüde edilmiş Mg-Zn-Zr alaşımına yaşlandırma ısıl işlemi uygulanmıştır. Yaşlandırma, ekstrüzyon sonrası numuneler üzerinde 180Cde 1-2-4-8 ve 24 saat süreyle gerçekleştirilmiştir. Yaşlanma eğrisinin elde edilmesi için mikrosertlik testleri yapılmıştır. Mikroyapıyı, ikinci fazları ve çökeltileri araştırmak için seçili alan elektron kırınımı SAED, enerji dağılım spektrometrisi EDS ve yüksek çözünürlüklü geçirimli elektron mikroskobu HRTEM gibi ayrıntılı geçirimli elektron mikroskobu TEM incelemeleri kullanılmıştır. İkinci fazların ve çökeltilerin boyut, tip ve morfolojileri ileri geçirimli elektron mikroskobu teknikleri desteğiyle incelenmiştir. Sertlik sonuçları yardımı ile pik yaşlanma noktasının 8-saat yaşlanma olduğu bulunmuştur. TEM incelemeleri 8-saat yaşlanma numunesinde detaylandırılmıştır. Yaşlanma sertleşmesinden sorumlu çökeltilerin MgZn2 olduğu gözlemlenmiştir. Ayrıca bu çökeltilerim çoğu β1 fazıdır.

Makale detayları

A HRTEM-EDS-SAED Study of Precipitates in Mg-Zn-Zr Alloy

Yazarlar:

Ozgur Duygulu

Yayıncı:

Duzce University

Ana Başlıklar:

Malzeme Tasarım ve Davranışları

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 3, pp.1752-1761

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001323948

pISSN:

2148-2446

TEM

EDS

SAED

Magnesium alloys

Extrusion

AgingTEM

EDS

SAED

Magnezyum alaşımları

Ekstrüzyon

Yaşlandırma

Sayı

Makale detayları

Yazarlar: Ozgur Duygulu

Yayıncı: Duzce University

Ana Başlıklar: Malzeme Tasarım ve Davranışları

Dergi: Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 3, pp.1752-1761

Belge Tipi: Makale

Yayın Tarihi: 7/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001323948

pISSN: 2148-2446

Sayı

Yazarlar:

Ozgur Duygulu

Yayıncı:

Duzce University

Ana Başlıklar:

Malzeme Tasarım ve Davranışları

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.12 Issue 3, pp.1752-1761

Belge Tipi:

Makale

Yayın Tarihi:

7/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001323948

pISSN:

2148-2446