همیار مواد [کانال مواد و متالورژی]

. Fracture Toughness . ┏━━━━⚙👷⚒━━━━┓    🆔 @hamyarmavad     ┗━━━━🔥💎🔬━━━━┛

. Ductility

✅Final

Final✅

✅تست های جدید امروز

✅ نصب و راه اندازی یک دستگاه صنعتی SLM دیگر ✅ یک سال گارانتی ✅ خدمات پس از فروش حرفه ای جهت مشاوره با ادمین در ارتباط باشید

متالورژیکی ترین پیج اینستاگرام دنیا اینجاست 👇 https://instagram.com/hamyarmavad

Five types of cast iron: (a) gray iron, Gray cast iron contains small, interconnected graphite flakes that cause low strength and ductility. This is the most widely used cast iron and is named for the dull gray color of the fractured surface. Gray cast iron contains many clusters, or eutectic cells, of interconnected graphite flakes. (b) white iron,White cast iron is a hard, brittle alloy containing massive amounts of Fe3C. A fractured surface of this material appears white, hence the name. A group of highly alloyed white irons are used for their hardness and resistance to abrasive wear. Elements such as chromium, nickel, and molybdenum are added so that, in addition to the alloy carbides formed during solidification, martensite is formed during subsequent heat treatment. (c) malleable iron, Malleable cast iron, formed by the heat treatment of white cast iron, produces rounded clumps of graphite. It exhibits better ductility than gray or white cast irons. It is also very machinable. Malleable iron is produced by heat treating unalloyed 3% carbon equivalent (2.5% C, 1.5% Si) white iron. During the malleabilizing heat treatment, the cementite formed during solidification is decomposed and graphite clumps, or nodules, are produced. The nodules, or temper carbon, often resemble popcorn. The rounded graphite shape permits a good combination of strength and ductility. (d) ductile iron,Ductile (or nodular) cast iron contains spheroidal graphite particles. Ductile iron is produced by treating liquid iron with a carbon equivalent of near 4.3% with magnesium, which causes spheroidal graphite (called nodules) to grow during solidification, rather than during a lengthy heat treatment. Several steps are required to produce this iron. These include desulfurization, nodulizing, and inoculation. (e) compacted graphite iron.Compacted-graphite cast iron contains rounded but interconnected graphite also produced during solidification. The graphite shape in compacted-graphite cast iron is intermediate between flakes and spheres, with numerous rounded rods of graphite that are interconnected to the nucleus of the eutectic cell. This compacted graphite, sometimes called vermicular graphite, also forms when ductile iron fades. The compacted graphite permits strengths and ductilities that exceed those of gray cast iron, but allows the iron to retain good thermal conductivity and vibration damping properties