Fracture Surface Morphology of the Impact-Loaded Tempered Spring Steels

Gülcan Toktaş; Adem Biçer

Makale detayları

Fracture Surface Morphology of the Impact-Loaded Tempered Spring Steels

Yazarlar:

Gülcan Toktaş | Adem Biçer

Yayıncı:

Sakarya University

Ana Başlıklar:

Material Design and Behaviors

Dergi:

Sakarya University Journal of Science Vol.28 Issue 6, pp.1315-1325

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001331521

pISSN:

2147-835X

Anahtar kelimeler:

Özet:

 The objective of this study is to evaluate the surface morphology of 51CrV4 and 55Cr3 spring steels after undergoing tempering and testing at various temperatures, with a focus on dynamic fracture behavior. For this purpose, 51CrV4 and 55Cr3 spring steel samples were normalized at 870C for 30 minutes for the same initial microstructure. Then, samples were austenitized at 870C for 30 minutes and rapidly quenched in oil following tempering at 300C-525C range for 2 hours. Tensile tests at room temperature were performed to identify tensile properties, especially percent elongation values. Charpy V notched impact tests were carried out at 40, 0, room temperature, and 80C testing temperatures to examine the fracture surface morphology of steels according to heat treatment procedures and testing environmental temperature. The fracture surfaces were examined by micro and macro analysis, respectively achieved by a digital camera and a scanning electron microscope SEM. Mix mode ductile and brittle fracture quasi-cleavage type was detected for all quenched and tempered steels. Increasing tempering and testing temperatures resulted in more ductile fractures with many dimple formations and fewer secondary cracks.

 The objective of this study is to evaluate the surface morphology of 51CrV4 and 55Cr3 spring steels after undergoing tempering and testing at various temperatures, with a focus on dynamic fracture behavior. For this purpose, 51CrV4 and 55Cr3 spring steel samples were normalized at 870C for 30 minutes for the same initial microstructure. Then, samples were austenitized at 870C for 30 minutes and rapidly quenched in oil following tempering at 300C-525C range for 2 hours. Tensile tests at room temperature were performed to identify tensile properties, especially percent elongation values. Charpy V notched impact tests were carried out at 40, 0, room temperature, and 80C testing temperatures to examine the fracture surface morphology of steels according to heat treatment procedures and testing environmental temperature. The fracture surfaces were examined by micro and macro analysis, respectively achieved by a digital camera and a scanning electron microscope SEM. Mix mode ductile and brittle fracture quasi-cleavage type was detected for all quenched and tempered steels. Increasing tempering and testing temperatures resulted in more ductile fractures with many dimple formations and fewer secondary cracks.

 The objective of this study is to evaluate the surface morphology of 51CrV4 and 55Cr3 spring steels after undergoing tempering and testing at various temperatures, with a focus on dynamic fracture behavior. For this purpose, 51CrV4 and 55Cr3 spring steel samples were normalized at 870C for 30 minutes for the same initial microstructure. Then, samples were austenitized at 870C for 30 minutes and rapidly quenched in oil following tempering at 300C-525C range for 2 hours. Tensile tests at room temperature were performed to identify tensile properties, especially percent elongation values. Charpy V notched impact tests were carried out at 40, 0, room temperature, and 80C testing temperatures to examine the fracture surface morphology of steels according to heat treatment procedures and testing environmental temperature. The fracture surfaces were examined by micro and macro analysis, respectively achieved by a digital camera and a scanning electron microscope SEM. Mix mode ductile and brittle fracture quasi-cleavage type was detected for all quenched and tempered steels. Increasing tempering and testing temperatures resulted in more ductile fractures with many dimple formations and fewer secondary cracks.

 The objective of this study is to evaluate the surface morphology of 51CrV4 and 55Cr3 spring steels after undergoing tempering and testing at various temperatures, with a focus on dynamic fracture behavior. For this purpose, 51CrV4 and 55Cr3 spring steel samples were normalized at 870C for 30 minutes for the same initial microstructure. Then, samples were austenitized at 870C for 30 minutes and rapidly quenched in oil following tempering at 300C-525C range for 2 hours. Tensile tests at room temperature were performed to identify tensile properties, especially percent elongation values. Charpy V notched impact tests were carried out at 40, 0, room temperature, and 80C testing temperatures to examine the fracture surface morphology of steels according to heat treatment procedures and testing environmental temperature. The fracture surfaces were examined by micro and macro analysis, respectively achieved by a digital camera and a scanning electron microscope SEM. Mix mode ductile and brittle fracture quasi-cleavage type was detected for all quenched and tempered steels. Increasing tempering and testing temperatures resulted in more ductile fractures with many dimple formations and fewer secondary cracks.

Makale detayları

Fracture Surface Morphology of the Impact-Loaded Tempered Spring Steels

Yazarlar:

Gülcan Toktaş | Adem Biçer

Yayıncı:

Sakarya University

Ana Başlıklar:

Material Design and Behaviors

Dergi:

Sakarya University Journal of Science Vol.28 Issue 6, pp.1315-1325

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001331521

pISSN:

2147-835X

Impact energy

Quasi-cleavage fracture

Tempering temperature

Testing temperature

Sayı

Makale detayları

Fracture Surface Morphology of the Impact-Loaded Tempered Spring Steels

Yazarlar: Gülcan Toktaş | Adem Biçer

Yayıncı: Sakarya University

Ana Başlıklar: Material Design and Behaviors

Dergi: Sakarya University Journal of Science Vol.28 Issue 6, pp.1315-1325

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001331521

pISSN: 2147-835X

Impact energy

Quasi-cleavage fracture

Tempering temperature

Testing temperature

Sayı

Yazarlar:

Gülcan Toktaş | Adem Biçer

Yayıncı:

Sakarya University

Ana Başlıklar:

Material Design and Behaviors

Dergi:

Sakarya University Journal of Science Vol.28 Issue 6, pp.1315-1325

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001331521

pISSN:

2147-835X