The Welding of TRIP Steel with Different Si Contents by Mig-Mag Welding Technique and Its Microstructure Investigation

Year 2017, Volume: 6 Issue: 2, 556 - 562, 30.12.2017

Serkan Dal , Cemal Çarboğa , Bülent Kurt

https://doi.org/10.17100/nevbiltek.354821

Abstract

In this study, TRIP (Transformation
Induced Plasticity) steel production with different Si content carried out by
adding Si in TRIP steel with using non-vacuum induction furnace. Typical TRIP
steel contains 0.2 wt % C, 1.7 Mn 1.5 Si. Al content of the steel was changed
to 0,6 – 1,15 - 1,7 ratios. After then, the rolled specimens were joined by robotic Gas-Metal
Arc Welding (GMAW) technique.  Hence, the
weldability of the different Si content into the TRIP was investigated. For this purpose, the microstructures
of the weld region were investigated and hardness profile achieved by being
done micro-hardness analysis of the samples taken from the weld cross section. 

Keywords

TRIP Steel, Welding, Microstructure

Farklı Oranlarda Si İçeren TRIP Çeliğinin Mig-Mag Kaynak Tekniği İle Kaynağı ve Mikroyapısının İncelenmesi

Abstract

Bu çalışmada,
tipik TRIP (Transformation Induced Plasticity) çeliğinin mevcut silisyum
miktarı değiştirilerek vakumsuz indüksiyon ocağında farklı Si içeriğine sahip
TRIP çeliği üretimi gerçekleştirilmiştir. Tipik TRIP çeliği % ağırlıkça 0,2 C,
1,7 Mn, 1,5 Si içermektedir. Üretimi gerçekleştirilen TRİP çeliğinin Si oranı ise
0,6 – 1,15 - 1,7 oranlarında değiştirilmiştir. Döküm ve haddeleme işlem
sonrasında, MİG-MAG kaynak tekniği kullanılarak birleştirilmiştir. Böylece,
farklı oranda Si içeren TRIP çeliğinin kaynak edilebilirliği araştırılmıştır.
Bu amaçla, kaynak bölgesinin mikroyapısı incelenmiş ve kaynak bölgesi
kesitinden mikrosertlik analizleri alınarak sertlik profili çıkarılmıştır.

Keywords

TRIP Çeliği, Kaynak, Mikroyapı

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