Investigation of the Effect of Heat Treatment Applied at the Same Temperature and Reduction Process Applied at Different Rates on the Mechanical Properties of Brake Pipes

Ozan Koyuncu; Burak Çelik; Yasin Akgül; Alper İncesu

Article Details

Investigation of the Effect of Heat Treatment Applied at the Same Temperature and Reduction Process Applied at Different Rates on the Mechanical Properties of Brake Pipes

Authors:

Ozan Koyuncu | Burak Çelik | Yasin Akgül | Alper İncesu

Publisher:

Karabuk University

Main Topics:

Malzeme Mühendisliği (Diğer)

Journal:

Çelik Araştırma ve Geliştirme Dergisi Vol.5 Issue 1, pp.1-8

Document Type:

Article

Publication Date:

1/2024

Document Language:

Turkish

Document ID (Org No.):

2001320823

pISSN:

2757-8224

Keywords:

Abstract:

 In this study, brake pipes with 3.40 mm and 4.75 mm outer diameters were reduced to 3.20 mm and 4.65 mm outer diameters. Then, the brake pipes were subjected to a temperature of 450 C and 30 minutes. Annealing heat treatment was applied for a period of time and the samples were allowed to cool at room temperature. Samples with eight different parameters obtained in this way were comparatively examined in terms of mechanical properties and microstructure. With the reduction process applied, increases in yield strength, tensile strength and Vickers hardness values were observed in the decrease from 3.40 mm outer diameter pipe to 3.20 mm outer diameter and from 4.75 mm outer diameter pipe to 4.65 mm outer diameter. There were decreases in elongation at break values inversely proportional to the strength values. It is understood from the changes in mechanical properties that the applied annealing heat treatment parameters are sufficient in terms of temperature and time. From the data obtained as a result of the bending test, it was observed that the decrease from 4.75 mm outer diameter pipe to 4.65 mm outer diameter exhibited a parallel behavior with other mechanical properties, but that it exhibited the opposite behavior when falling from 3.65 mm outer diameter pipe to 3.40 mm outer diameter.

 In this study, brake pipes with 3.40 mm and 4.75 mm outer diameters were reduced to 3.20 mm and 4.65 mm outer diameters. Then, the brake pipes were subjected to a temperature of 450 C and 30 minutes. Annealing heat treatment was applied for a period of time and the samples were allowed to cool at room temperature. Samples with eight different parameters obtained in this way were comparatively examined in terms of mechanical properties and microstructure. With the reduction process applied, increases in yield strength, tensile strength and Vickers hardness values were observed in the decrease from 3.40 mm outer diameter pipe to 3.20 mm outer diameter and from 4.75 mm outer diameter pipe to 4.65 mm outer diameter. There were decreases in elongation at break values inversely proportional to the strength values. It is understood from the changes in mechanical properties that the applied annealing heat treatment parameters are sufficient in terms of temperature and time. From the data obtained as a result of the bending test, it was observed that the decrease from 4.75 mm outer diameter pipe to 4.65 mm outer diameter exhibited a parallel behavior with other mechanical properties, but that it exhibited the opposite behavior when falling from 3.65 mm outer diameter pipe to 3.40 mm outer diameter.

 In this study, brake pipes with 3.40 mm and 4.75 mm outer diameters were reduced to 3.20 mm and 4.65 mm outer diameters. Then, the brake pipes were subjected to a temperature of 450 C and 30 minutes. Annealing heat treatment was applied for a period of time and the samples were allowed to cool at room temperature. Samples with eight different parameters obtained in this way were comparatively examined in terms of mechanical properties and microstructure. With the reduction process applied, increases in yield strength, tensile strength and Vickers hardness values were observed in the decrease from 3.40 mm outer diameter pipe to 3.20 mm outer diameter and from 4.75 mm outer diameter pipe to 4.65 mm outer diameter. There were decreases in elongation at break values inversely proportional to the strength values. It is understood from the changes in mechanical properties that the applied annealing heat treatment parameters are sufficient in terms of temperature and time. From the data obtained as a result of the bending test, it was observed that the decrease from 4.75 mm outer diameter pipe to 4.65 mm outer diameter exhibited a parallel behavior with other mechanical properties, but that it exhibited the opposite behavior when falling from 3.65 mm outer diameter pipe to 3.40 mm outer diameter.

 Bu çalışmada, 3,40 mm ve 4,75 mm dış çapa sahip fren borularına 3,20 mm ve 4,65 mm dış çapa sahip olacak şekilde redüksiyon işlemi uygulanmıştır. Ardından fren borularına 450 C sıcaklık ve 30 dk. süre ile tavlama ısıl işlem uygulanmış ve numuneler oda sıcaklığında soğumaya bırakılmıştır. Bu şekilde elde edilen sekiz farklı parametredeki numuneler karşılaştırmalı olarak mekanik özellikler ve mikroyapı bakımından incelenmiştir. Uygulanan redüksiyon işlemi ile birlikte 3,40 mm dış çap borudan 3,20 mm dış çapa düşüşte hem de 4,75 mm dış çap borudan 4,65 mm dış çapa düşüşte akma mukavemeti ve çekme mukavemeti ve Vickers sertlik değerlerinde artışlar gözlemlenmiştir. Kopma uzaması değerlerinde ise mukavemet değerleri ile ters orantılı şekilde azalmalar meydana gelmiştir. Uygulanan tavlama ısıl işlem parametrelerinin sıcaklık ve süre olarak yeterli olduğu mekanik özelliklerdeki değişimlerden anlaşılmaktadır. Eğme deneyi sonucunda elde edilen verilerden 4,75 mm dış çap borudan 4,65 mm dış çapa düşüşte diğer mekanik özellikler ile paralel bir davranış sergilediği ancak 3,65mm dış çap borudan 3,40 mm dış çapa düşüşte bunun tam tersi bir davranış sergilediği gözlemlenmiştir.

Article Details

Investigation of the Effect of Heat Treatment Applied at the Same Temperature and Reduction Process Applied at Different Rates on the Mechanical Properties of Brake Pipes

Authors:

Ozan Koyuncu | Burak Çelik | Yasin Akgül | Alper İncesu

Publisher:

Karabuk University

Main Topics:

Malzeme Mühendisliği (Diğer)

Journal:

Çelik Araştırma ve Geliştirme Dergisi Vol.5 Issue 1, pp.1-8

Document Type:

Article

Publication Date:

1/2024

Document Language:

Turkish

Document ID (Org No.):

2001320823

pISSN:

2757-8224

Brake pipes

tube sinking

tempering

mechanical properties.Fren borusu

redüksiyon

tavlama

mekanik özellikler.

Issues

Article Details

Authors: Ozan Koyuncu | Burak Çelik | Yasin Akgül | Alper İncesu

Publisher: Karabuk University

Main Topics: Malzeme Mühendisliği (Diğer)

Journal: Çelik Araştırma ve Geliştirme Dergisi Vol.5 Issue 1, pp.1-8

Document Type: Article

Publication Date: 1/2024

Document Language: Turkish

Document ID (Org No.): 2001320823

pISSN: 2757-8224

Issues

Authors:

Ozan Koyuncu | Burak Çelik | Yasin Akgül | Alper İncesu

Publisher:

Karabuk University

Main Topics:

Malzeme Mühendisliği (Diğer)

Journal:

Çelik Araştırma ve Geliştirme Dergisi Vol.5 Issue 1, pp.1-8

Document Type:

Article

Publication Date:

1/2024

Document Language:

Turkish

Document ID (Org No.):

2001320823

pISSN:

2757-8224