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Showing 1 to 10 of 10 for “"Acicular Ferrite"”.
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Acicular ferrite in a plain carbon and an alloy steel
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Metallurgical Engineering, 1951
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Investigation into the mechanism of acicular ferrite nucleation in steel weld metal
… until recently when a microstructure called acicular ferrite was discovered. Acicular ferrite forms on non-metallic inclusions found within the weldment and when significant amounts are "grown", the weldment's toughness and strength approaches that of the steel-base plate. Unfortunately, the …
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Development of third generation advanced high strength steels
… steels with combinations of either bainite, acicular ferrite, and austenite or martensite and austenite were investigated as third generation advanced high strength steels targeted for automotive applications. Large additions of manganese (>13 wt%) and carbon (</p> <p>Duplex steels with …
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Anomalous behaviour of molybdenum in steel welds
… which promotes the intragranular nucleation of acicular ferrite on titanium-rich phases. It is demonstrated that the titanium effect is not intrinsically different for molybdenumcontaining welds. However, the extra hardenability associated with molybdenum certainly helps to suppress the …
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Low Temperature Cleavage Fracture of Microalloyed Bainitic Plate Steels
… of two bainite types (conventional bainite and acicular ferrite) and EBSD 15° domain size. Charpy impact tests (using two notch orientations) were carried out over a range of temperatures. Cleavage facet sizes were measured on -196°C Charpy samples. The range of TMP schedules produced variations …
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Material properties and mechanical behaviour of large-scale additively manufactured multi-layered steels
… change in strength between print patterns. Acicular ferrite/bainite were found close to the interface and allotriomorphic ferrite into the mild steel. A possible explanation for the changes in microstructure from is discussed by the use of electron diffraction spectroscopy, digital image …
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Elevated temperature mechanical properties of line pipe steels
… were evaluated. The four materials include a ferrite-pearlite line pipe steel with a yield strength specification of 359 MPa (52 ksi) and three 485 MPa (70 ksi) yield strength acicular ferrite line pipe steels. Deformation behavior, ductility, strength, strain hardening rate, strain rate …
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Optimisation of GMAW via the alternating shielding gas technique
… welding procedures and greater formation of acicular ferrite. Additionally, mathematical modelling coupled with the genetic algorithm heuristic assisted with enhancing the efficiency of welds under the supply of N as a protective gas. The study carried out was able to diminish the shielding …
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The unlubricated sliding wear behaviour of austempered ductile irons
… the austempered iron's unique microstructure of acicular ferrite and retained austenite and a partial transformation of austenite to martensite. However, at the higher sliding velocity the exceptional wear resistance is derived from a development of an tribologically protective oxide film …