Based on the metallographic studies of undercarriage wheels, which are operated within different periods time and have types degrees wear, it can be concluded that steel with chemical composition close to eutectoid one, equilibrium crystal lattice, should used for manufacturing. The microstructure working surfaces wheels fine pearlite, ideally sorbitol (fine type pearlite). These requirements m...

The manufacturing of Dual-Phase steels includes as a crucial step the annealing cold-rolled ferrite-pearlite (F/P) microstructure, which involves numerous and interacting metallurgical mechanisms, namely recovery/recrystallization ferrite, globularization, manganese enrichment, coarsening cementite finally austenite transformation. Present study focuses on transformation considering its interac...

The effects of steel wire patenting process parameters on very fine interlamellar spacing in the pearlitic steel wire were investigated and the optimized condition of the process was achieved. In this work, the initial nanopearlitic structure was obtained in a 0.72 wt% carbon steel wire before the wire drawing process. The results were the minimum interlamellar spacing of 35 nm and maximum ulti...

The effect of an addition of 0.37 Wt % Won the overall transformation rate of the austenitepearlite reaction in a eutectoid steel is examined. Pearlite growth rates and interlamerllar spacing are measured as a function of transformation temperatures. Tungesten raises the Ael temperature, for most transformation temperatures, decreases the overall reaction rate, the growth rate and the interlame...

Strong steels also have to be tough and hence rely on fine microstructures such as bainite or martensite, produced commercially by continuous cooling transformation. Depending on the detailed requirements, the steel-design process may explicitly require other higher temperature phases to be absent in the final microstructure. Such a procedure can be made easier by the availability of a good met...

To evaluate the effect of yield stress on hydrogen embrittlement (HE) martensitic and ferritic steels, (H) capture by structural inhomogeneities (hydrogen traps) plastic deformation mechanism corrosion cracking (SCC) are considered. In presence hydrogen, brittle fracture high-strength steels consists flat areas intergranular at initial austenitic grain boundaries quasi-brittle cracks martensite...

Abstract The molecular dynamics (MD) simulation method was adopted to explore impact of interface chemistry on pearlite mechanical response Bagaryatskii orientation relationship between ferrite and cementite. By changing terminal surface types cementite at ferrite-cementite interface, this study analyzed influence peak stress plastic deformation behavior, as well strain transmission two phases ...

The oil and gas production has grown steadily, the care with its transportation grid needs to be maintained expanded. pipeline used in transport of by-product requires materials high mechanical strength, toughness, fatigue resistance. chemical composition distribution, amount, morphology final microconstituents steel are paramount importance once it will directly influence properties. fracture ...