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The role of tin in the hot-ductility deterioration of a low-carbon steel
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The effect of tin on the hot ductility of a 0.15 wt pet C steel is investigated using a continuous-casting thermal simulator with three cooling rates: 5 [degrees]C/s, 10 [degrees]C/s, and 20 [degrees]C/s. Non equilibrium grain-boundary segregation of tin occurs during cooling and plays an important role in reducing the steel hot ductility. There is a critical cooling rate for the Sn segregation being between 5 [degrees]C/s and 20 [degrees]C/s. When the cooling rate is higher than the critical...
Related newspaper, magazine, and journal articles from HighBeam Research
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Effects of cooling rate on aging at 475 [degrees]c of an oxide-dispersion-strengthened ferritic steel
Metallurgical and Materials Transactions
; MA956 alloy shows embrittlement and maximum hardening when it is aged at 475 [degrees]C.[1,2,3] This phenomenon has been attributed to spinodal decomposition of the alloy into Fe-rich [alpha] and Cr-rich [alpha]' phases.[1] Therefore, since the alloy is unstable into the miscibility gap of the
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The effects of cooling rate on microstructure and mechanical behavior of Sn-3.5Ag solder
JOM
; The microstructure, tensile, and creep behavior of bulk Sn-3.5Ag solder were studied as a function of cooling rate. Controlled cooling rates were obtained by cooling specimens in different media: water, air, or furnace. The cooling rate significantly affected secondary dendrite arm size and spacing
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Effect of cooling rate on the as-quenched microstructure and mechanical properties of HSLA-100 steel plates
Metallurgical and Materials Transactions
; The effect of cooling rate on the as-quenched microstructure and mechanical properties of a 14-mm-thick HSLA-100 steel using various cooling media such as brine, water, oil, air, and furnace has been studied. While quenching in brine, water, and oil resulted in lath martensite structures, the
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Effects of contamination on Quench-Oil Cooling rate. (Heat Treating).(Statistical Data Included)
Industrial Heating
; Modern quenching oils offer a wide range of capabilities and performance. However, heating and aging of the oil, as well as oil contamination by common contaminants, such as salt, water, hydraulic fluids and soot, can affect the quenching performance of a premium medium speed oil, resulting in
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Age-hardenable nickel-base alloy: RA718 (UNS N07718) is a nickel alloy precipitation hardened by gamma prime and double prime. It is readily fabricated and is weldable even in the aged condition. The alloy is used for gas turbine components at temperatures up to 650[degrees]C (1200[degrees]F) as well as for cryogenic equipment.(Alloy Digest Data Sheet)
Advanced Materials & Processes
; ALLOY 718 is strengthened by a precipitation hardening reaction involving columbium, titanium, aluminum, and nickel, with a degree of solid-solution strengthening by molybdenum. For alloy RA718, two commonly used heat treatments are as follows. * Treatment I: Anneal at 925-1010[degrees]C
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Why 15[degrees]? (Letters to the Editor).
Engineered Systems
; While reading Timothy Coyle's August 2002 Current Affairs column (page 32), I was struck by the idea of using the 15[degrees] delta T for a 95[degrees]F design day. My first impression was, Why 15[degrees]? In my first job out of college, working with power plant ventilation, I was taught to use a
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Internal Oven Provides Voltage Reference Less Than 1-ppm/[degrees]C Drift.(Technology Information)
Electronic Design
; When precision voltage-reference requirements demand less than 1-ppm/[degrees]C temperature drift, the designer can choose to use expensive components (off-the-shelf modules) or build a custom oven enclosure. This second choice is common among cost-sensitive designs where a less-expensive IC
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Properties of TiAl sheet pack-rolled at temperatures below 1000 [degrees]C
Metallurgical and Materials Transactions
; TiAl alloy specimens with microcrystalline (MC, grain size is 5 [mu]m) and submicrocrystalline (SMC, grain size is 0.4 [mu]m) structures were successfully pack-rolled to sheet with a thickness down to 0.4 mm in the temperature ranges of 800 [degrees]C to 1000 [degrees]C and 900 [degrees]C to 1000
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Digital Sine-Wave Generator Produces 0[degrees] To 360[degrees] Phase-Shifts.(Technology Information)
Electronic Design
; Sine-wave generators with 0[degrees] to 360[degrees] phase-shifts are very important testing blocks in many systems involving DSP operations (i.e., I/Q modulator-demodulator communication, phase-angle measurements and up-down counter conversion in controls, and power electronics). The popular
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Amorphous zirconium retains microstructure up to 1600[degrees]F.(Metals)
Advanced Materials & Processes
; Amorphous pure zirconium metal that retains its beneficial microstructure and properties at temperatures up to 870[degrees]C (1100[degrees]F) has been made by researchers at Los Alamos National Laboratory, Los Alamos, N.M. This is said to be the first time that an amorphous metal has been made of
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