0000056902 00000 n The results show that the scratching of the micro-alloyed iron (FGL2) leads to less matrix damage and to an extended microploughing wear mechanism. Table 3.3. From: Materials and the Environment (Second Edition), 2013, Ramesh Singh, in Applied Welding Engineering (Second Edition), 2016. The results show that, because copper increases the retained austenite content in ADI, the Cu-alloyed ADI has better impact toughness and fracture toughness (KIC value) than does the unalloyed one. When the cast iron contains from 0 to ∼ 7% Cu, inclusions can’t be detected, The fine structure of pearlite in alloys with the structure of gray cast iron that contain 1.6 and 10.8 wt% copper has been studied using transmission electron microscopy. 0000045290 00000 n Copper content increase up to 6…7 wt. 0 0000036006 00000 n Cast iron material groups include white and grey cast irons (Fig. Glass or ceramics are also used to avoid the contamination of metal ions. : Mater. L. DE LORENZIS, ... L.C. The mechanical properties of high-chromium cast irons are better than those of the high-silicon cast irons. It is said that fine irregularities are easily formed on a lap surface, which allows it to hold abrasives in the recessed regions and makes lapping advantageous. iron casting are still empirical in nature, but many others are deeply rooted in mathematics. Roy Elliott BSc, PhD, in Cast Iron Technology, 1988. It is classified according to the microstructure, which depends on the carbon content, the alloy and impurity content, the cooling rate during and after freezing, and heat treatment after casting. Out-of-shape cupric inclusions of the size of ∼ 1 micron are detected in the ledeburite cementite. Cast iron, an alloy of iron (Fe) and carbon (C), has gained popularity in the market because of its low cost. 0000061864 00000 n In particular, the two cast iron materials with significantly higher strengths creating important impact into these recent developments are compacted graphite iron (CGI/GJV) and austempered ductile iron (ADI). 0000009143 00000 n Gadag et al. 0000042836 00000 n 0000007253 00000 n Higher chromium additions of 15% to 35% provide excellent oxidation and growth resistance for temperatures up to 1800°F (980°C). Vickers microindentation and microscratch tests are also performed on these iron samples. Effect of hydrogenation on mechanical properties and tensile fracture mechanism of a high-nitrogen austenitic steel, Materials science of explosive welding and high strain rate phenomena, Materials processing using electron beam: cladding, surface alloying, hardening and additive manufacturing, High-sulfur and sulfur-copper antifriction cast irons with improved machinability. The Cr-Mo steel SCM 420 is forged and carburized. It contains some carbides and sufficient alloy content to produce an austenitic structure. In sulphur-containing atmospheres, however, the nickel content of these alloys limits their use to temperatures below 932°F (500°C). However, at a high copper content, the strength of alloys decreases due to the formation of a brittle white iron structure. The analysis of the images was done using ImageJ and CERN-Root software. endstream endobj 37 0 obj<> endobj 38 0 obj<> endobj 39 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/ExtGState<>>> endobj 40 0 obj[/ICCBased 67 0 R] endobj 41 0 obj[/Indexed 40 0 R 255 68 0 R] endobj 42 0 obj[/Indexed 40 0 R 255 81 0 R] endobj 43 0 obj<> endobj 44 0 obj<>stream However, the choice of abrasive grain is also dependent on the surface roughness requirement and is restricted by the specific metal removal rate. The chromium concentration is slightly raised to obtain hard chill. Cast iron is used in the oil and gas industry for making water conduit pipes, packer parts, boilers, valve bodies, and valve parts. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B9780128041765000074, URL: https://www.sciencedirect.com/science/article/pii/B9780123919168000078, URL: https://www.sciencedirect.com/science/article/pii/B9781845694487500010, URL: https://www.sciencedirect.com/science/article/pii/B9780123847003000037, URL: https://www.sciencedirect.com/science/article/pii/B9780408015127500045, URL: https://www.sciencedirect.com/science/article/pii/B9780081001172000030, URL: https://www.sciencedirect.com/science/article/pii/B9780444637116000132, URL: https://www.sciencedirect.com/science/article/pii/B9781455778584000066, URL: https://www.sciencedirect.com/science/article/pii/B9780857090157500014, URL: https://www.sciencedirect.com/science/article/pii/B9780750651318500038, Materials and the Environment (Second Edition), 2013, Applied Welding Engineering (Second Edition). )