Hi, my name is Siri Marthe Arbo and I am one of the PhD students working on SFI Manufacturing. During my PhD, I will try to find new ways of joining steel and aluminium together.
This spring I finished my master degree in material science at NTNU, where I specialized in physical metallurgy. I focused my studies to learn more about the microstructures and properties found in different metals and in my master thesis I chose to focus on titanium.
Dissimilar metals
I am grateful to have gotten the opportunity to work on SFI Manufacturing, where I can continue to study what I love the most – metals and all the different possibilities metals provide when it comes to making high quality products used in for instance aerospace application, cars or offshore installations. During my PhD, I will look at primarily two dissimilar metals, steel and aluminium, and try to find a new way of joining the two metals together. By combining two dissimilar metals we can attain new lightweight and high performance products having the best properties from each of the metals!
Joining process of steel and aluminium
This joining process is usually performed using heat, similar to the traditional welding. However, under the influence of heat, new and sometimes quite brittle compounds can be formed at the interface between the two metals. These brittle compounds are called intermetallic phases, and can make the joining area weaker than the rest of the product. We want to avoid this problem, and I will look at a new joining process, where we can join two metals without using heat.
This is only my third week as a PhD student, and there has been a lot of new people and things to figure out – but so far so good! I am really excited to see what the next few years will bring and what we can discover!
This spring I finished my master degree in material science at NTNU, where I specialized in physical metallurgy. I focused my studies to learn more about the microstructures and properties found in different metals and in my master thesis I chose to focus on titanium.
Dissimilar metals
I am grateful to have gotten the opportunity to work on SFI Manufacturing, where I can continue to study what I love the most – metals and all the different possibilities metals provide when it comes to making high quality products used in for instance aerospace application, cars or offshore installations. During my PhD, I will look at primarily two dissimilar metals, steel and aluminium, and try to find a new way of joining the two metals together. By combining two dissimilar metals we can attain new lightweight and high performance products having the best properties from each of the metals!
Joining process of steel and aluminium
This joining process is usually performed using heat, similar to the traditional welding. However, under the influence of heat, new and sometimes quite brittle compounds can be formed at the interface between the two metals. These brittle compounds are called intermetallic phases, and can make the joining area weaker than the rest of the product. We want to avoid this problem, and I will look at a new joining process, where we can join two metals without using heat.
This is only my third week as a PhD student, and there has been a lot of new people and things to figure out – but so far so good! I am really excited to see what the next few years will bring and what we can discover!
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