TY - JOUR ID - 29822 TI - Influence of Cu and Ni on the Microstructure and Mechanical Properties of an HSLA Steel JO - International Journal of Iron & Steel Society of Iran JA - IJISSI LA - en SN - 2981-0388 AU - Abbasi, S. AU - Esmailian, M. AU - Ahangarani, S. AD - Iranian Research Organization for Science and Technology Y1 - 2017 PY - 2017 VL - 14 IS - 2 SP - 33 EP - 37 KW - HSLA steel KW - Composition KW - Mechanical properties KW - Microstructure DO - N2 - In this research the role of alloying elements on the microstructure and mechanical properties of an as cast and hot rolled high strength low alloy (HSLA) steel was studied. Different compositions with different amount of copper in the presence of nickel, hot rolled and quenched in oil. Tensile test, hardness test, scanning electron microscope (SEM) and optical microscope (OM) were used to evaluate different properties of each sample. The results showed that, all the samples revealed a ferrite-perlite structure in as cast structure, however finer structure with higher hardness was seen in the samples with higher amount of copper. Furthermore, in hot rolled samples, it was seen that addition of nickel and copper resulted in grain refinement. A remarkable drop was seen in elongation due to copper precipitation. Fractography also revealed that, increasing copper amount led to variation of fracture mechanism from ductile to shear ductile fracture. UR - https://journal.issiran.com/article_29822.html L1 - https://journal.issiran.com/article_29822_cea601feefa3be0e4b7a73a319f32c7f.pdf ER -