Fabrication of iron aluminum alloy/steel laminate by clad rolling

Abstract

Laminates of an iron-aluminum alloy (20Al) and three types of steel-chromium molybdenum (CrMo), high carbon (FeCMn), and precipitation hardening steel with niobium carbide (FeCNb)-were fabricated at 600°C and 1000°C by clad rolling based on the compression stress ratio of 20Al to steel. The laminates fabricated at 600°C exhibit a deformation microstructure with partial recrystallization, while those at 1000°C reveal a refined microstructure. The 20Al layer of all the laminates exhibit a {001}AE110ae texture, and the intensity of the texture increases with a decrease in the fabrication temperature and an increase in the reduction. The bending deformability of a laminate increases with a decrease in the compression stress ratio and by a reduction in the intensity of the {001}AE110ae texture. The clad plate is further rolled at room temperature to a thickness of approximately 150 mm, which enables winding without damage. It is concluded that a high-strength steel at high temperatures and a high Al content in the Fe-Al alloy is beneficial for the fabrication of deformable laminates.

Interface analysis and hot deformation behaviour of a novel laminated composite with high-Cr cast iron and low carbon steel prepared by hot compression bonding

“…Masahashi et al [5,6] reported that simultaneous deformation together with soft material is a beneficial method to deform hard material by stress relief, even though the plastic instabilities in one of the components happen earlier than the other one due to prominent differences in mechanical properties [23] . Fig.…”

“…However, the true stress-strain curve of the laminated composite shows a different flow pattern in three typical features: (i) the flow behaviour is mild without stress saltation, which is conducive to reduce the crack sensitivity, (ii) the peak value of the true stress is ~108 MPa at true strain of ~0.4. Considerable lower stress combined with higher plastic strain signifies the soft claddings contributed to stress relief during simultaneous deformation [5,6] . (iii) A steady state rather than a sharp decrease of the true stress is displayed over the peak value.…”

“…Laminated metal composites (LMCs) have drawn considerable research attention over the past two decades due to their unique properties including advanced mechanical performance and virtuous complementarity between the constituent metals [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] . Fabrication of materials in the form of laminated structure with immaculate interfacial bond can significantly improve many properties such as fracture toughness, impact resistance, fatigue behaviour and damping capacity; or provide enhanced ductility or formability for otherwise brittle material [1,2] .…”

“…Fabrication of materials in the form of laminated structure with immaculate interfacial bond can significantly improve many properties such as fracture toughness, impact resistance, fatigue behaviour and damping capacity; or provide enhanced ductility or formability for otherwise brittle material [1,2] . Based on the advantages, increasing efforts have been focused on improving the workability of the brittle metal or alloy by means of lamination with the ductile material [5,6] .…”

Microstructure Evolutions at Severely-deformed Austenite/Martensite Interfaces of a Layer-integrated Steel

“…Multi-layered metals artificially constructed by brittle and ductile layers are of interest because of their good fracture properties, unique mechanical behaviors, [1][2][3][4][5][6][7][8] and further possibilities to attain functional properties such as corrosion resistance. As a pioneering work, Sherby et al investigated mechanical behaviors of laminated composites fabricated by a rolling; e.g., the composites constructed by ultrahigh-carbon-steel/mild-steel 9) and by ultrahigh-carbonsteel/brass.…”