Investigation of Martensitic Phase Transformation and Magnetic Properties of  Fe-30%Ni-2.6wt%Mo-X%Co Alloys

Erdem Yaşar; Osman Armağan; Talip Kırındı; Merve Sultan Akay Ağır

Makale detayları

Investigation of Martensitic Phase Transformation and Magnetic Properties of Fe-30%Ni-2.6wt%Mo-X%Co Alloys

Yazarlar:

Erdem Yaşar | Osman Armağan | Talip Kırındı | Merve Sultan Akay Ağır

Yayıncı:

Süleyman Demirel University

Ana Başlıklar:

Mühendislik

Dergi:

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.27 Issue 1, pp.27-32

Belge Tipi:

Makale

Yayın Tarihi:

4/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001287793

pISSN:

1308-6529

Anahtar kelimeler:

Özet:

 In this study, the microstructure of thermal effective martensitic phase transformation observed in the Fe-30wt.Ni-2.6wt.Mo-Xwt.Co X  0.8, 1.8 alloy was investigated morphologically and crystallographically by using Scanning Electron Microscopy SEM and Transmission Electron Microscopy TEM. In SEM studies, it was observed that the morphology of the martensite phase changed from lath and lenticular structure to massive structure with the addition of Co to the alloy. In addition to this, nano martensite formation was also observed as another effect of Co addition figure 2c, d. Properties of lenticular martensite, electron diffraction pattern of austenite and martensite structures were given by TEM studies. According to the Differential Scanning Calorimetry DSC analysis, it was determined that the martensitic transformation temperature Ms significantly increased with the increase of the Co amount in the alloys. Also, by using Mössbauer spectroscopy, it was shown that the amount of martensite increased with the increase of Co amount and the magnetic order of the alloy changed accordingly.

 In this study, the microstructure of thermal effective martensitic phase transformation observed in the Fe-30wt.Ni-2.6wt.Mo-Xwt.Co X  0.8, 1.8 alloy was investigated morphologically and crystallographically by using Scanning Electron Microscopy SEM and Transmission Electron Microscopy TEM. In SEM studies, it was observed that the morphology of the martensite phase changed from lath and lenticular structure to massive structure with the addition of Co to the alloy. In addition to this, nano martensite formation was also observed as another effect of Co addition figure 2c, d. Properties of lenticular martensite, electron diffraction pattern of austenite and martensite structures were given by TEM studies. According to the Differential Scanning Calorimetry DSC analysis, it was determined that the martensitic transformation temperature Ms significantly increased with the increase of the Co amount in the alloys. Also, by using Mössbauer spectroscopy, it was shown that the amount of martensite increased with the increase of Co amount and the magnetic order of the alloy changed accordingly.

 In this study, the microstructure of thermal effective martensitic phase transformation observed in the Fe-30wt.Ni-2.6wt.Mo-Xwt.Co X  0.8, 1.8 alloy was investigated morphologically and crystallographically by using Scanning Electron Microscopy SEM and Transmission Electron Microscopy TEM. In SEM studies, it was observed that the morphology of the martensite phase changed from lath and lenticular structure to massive structure with the addition of Co to the alloy. In addition to this, nano martensite formation was also observed as another effect of Co addition figure 2c, d. Properties of lenticular martensite, electron diffraction pattern of austenite and martensite structures were given by TEM studies. According to the Differential Scanning Calorimetry DSC analysis, it was determined that the martensitic transformation temperature Ms significantly increased with the increase of the Co amount in the alloys. Also, by using Mössbauer spectroscopy, it was shown that the amount of martensite increased with the increase of Co amount and the magnetic order of the alloy changed accordingly.

 Bu çalışmada, Fe-30Ni-2.6Mo-XCo X  0.8, 1.8  alaşımında gözlenen termal etkili martensitik faz dönüşümünün mikro yapısı, taramalı elektron mikroskobu SEM ve geçirmeli elektron mikroskobu TEM kullanılarak morfolojik ve kristalografik olarak incelenmiştir. SEM çalışmalarında, alaşıma Co eklenmesiyle martensit fazın morfolojisinin iğnemsi ve merceksi yapıdan masif yapıya dönüştüğü gözlenmiştir. Bununla birlikte Co ilavesinin diğer bir etkisi olarak nano martensit oluşumu da görülmüştür figure 2c, d. Lentiküler martensitin özellikleri, östenit ve martensit yapılarının elektron kırınım modeli TEM incelemeleri ile verilmiştir. Diferansiyel Taramalı Kalorimetre DSC analizlerine göre, alaşımlardaki Co miktarının artmasıyla martensitik dönüşüm sıcaklığının Ms önemli ölçüde arttığı belirlenmiştir. Ayrıca Mössbauer spektroskopisi kullanılarak Co miktarının artmasıyla martensit miktarının arttığı ve alaşımın manyetik düzeninin buna bağlı olarak değiştiği gösterilmiştir.

Makale detayları

Investigation of Martensitic Phase Transformation and Magnetic Properties of Fe-30%Ni-2.6wt%Mo-X%Co Alloys

Yazarlar:

Erdem Yaşar | Osman Armağan | Talip Kırındı | Merve Sultan Akay Ağır

Yayıncı:

Süleyman Demirel University

Ana Başlıklar:

Mühendislik

Dergi:

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.27 Issue 1, pp.27-32

Belge Tipi:

Makale

Yayın Tarihi:

4/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001287793

pISSN:

1308-6529

Thermally induced martensite

Crystallographic properties

Magnetic properties

TEM

SEM

Mössbauer spectroscopyTermal etkili martensit

Kristalografik özellikler

Manyetik özellikler

TEM

SEM

Mössbauer Spektroskopisi

Sayı

Makale detayları

Yazarlar: Erdem Yaşar | Osman Armağan | Talip Kırındı | Merve Sultan Akay Ağır

Yayıncı: Süleyman Demirel University

Ana Başlıklar: Mühendislik

Dergi: Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.27 Issue 1, pp.27-32

Belge Tipi: Makale

Yayın Tarihi: 4/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001287793

pISSN: 1308-6529

Sayı

Yazarlar:

Erdem Yaşar | Osman Armağan | Talip Kırındı | Merve Sultan Akay Ağır

Yayıncı:

Süleyman Demirel University

Ana Başlıklar:

Mühendislik

Dergi:

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi Vol.27 Issue 1, pp.27-32

Belge Tipi:

Makale

Yayın Tarihi:

4/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001287793

pISSN:

1308-6529