TY - JOUR ID - 248312 TI - Investigation of simple shear extrusion steel mold and mechanical properties of nanostructured extruded samples of Al6061 JO - International Journal of Iron & Steel Society of Iran JA - IJISSI LA - en SN - 2981-0388 AU - Balali, Mostafa AU - Beynaghi, Mohsen AU - Khosravi, Mohammad AD - Department of Mechanic، University of Birjand، Birjand، Iran AD - Department of Mechanic، University of Noshirvani، Babol، Iran AD - Department of Mechanic، Faculty of Mechanic and Materials ، Birjand University of Technology، Birjand، Iran Y1 - 2021 PY - 2021 VL - 18 IS - 1 SP - 106 EP - 112 KW - AISI 4140 steel mold KW - AISI D3 steel mandrel KW - sever plastic deformation KW - simple shear extrusion process KW - Microstructure KW - mechanical property DO - 10.22034/ijissi.2021.540568.1211 N2 - The extrusion is used to produce samples with irregular cross-sections. In this process, the material is pressed along a straight extrusion channel using a special design. Simple shear extrusion steel mold was designed by Catia software. AISI 4140 and AISI D3 steel were used to make this mold and mandrel, respectively. The material of the mold and mandrel was selected based on the mechanical properties of steels and their application in industry. It is a new Sever Plastic Deformation (SPD) process to produce nanostructured material which is used to produce high strength material. The specimen dimensions remain unchanged. Results revealed that Simple Shear Extrusion (SSE) is superior compared to equal channel angular pressing (ECAP) in term of scrap material. They also concluded that strain and pressure distribution is more symmetric in specimen cross-section, in this method, which is an important advantage of SSE compared to other SPD processes. In this study, first, a SSE mold with specified form and dimensions, was fabricated. The cross-section of samples was square and the material was Al6061. After processing, the microstructure and mechanical properties of specimens, which were processed using different pass numbers, were investigated using tensile and impact tests, hardness evaluation, metallography. The results presented an improvement in the mechanical properties and microstructure. Due to finer grains, ductility of specimens was also improved in addition to an improvement in strength. UR - https://journal.issiran.com/article_248312.html L1 - https://journal.issiran.com/article_248312_cbe807083163e950fafe473aede54948.pdf ER -