High strain rate superplasticity
WebSep 15, 2024 · An unusually high strain rate sensitivity, m, of 0.43 ± 0.02 was obtained by using nanoindentation creep test in the same temperature region, indicating that superplasticity can be expected at low temperatures. Samples were deformed by tension at different strain rates and different temperatures lower than 0.5 × Tm. WebFeb 1, 1999 · Based on the obtained results, the role of the liquid phase in the high-strain-rate superplasticity is discussed. The sample was Al-Mg (5052) alloy reinforced with 20vol% Si 3 N 4 particles, fabricated by a powder metallurgy process. The sample showed an excellent superplasticity under the conditions given in Table 1.
High strain rate superplasticity
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WebNov 25, 2024 · The processed materials exhibited high resistance at room temperature and excellent superplasticity at the high strain rate of 10 −2 s −1 and temperatures between … WebSep 1, 2024 · During high-strain-rate superplastic deformation, superplasticity indices, and the microstructure of two Al–Zn–Mg–Cu–Zr alloys with additions of nickel and iron, which contain equal volume fractions of eutectic particles of Al3Ni or Al9FeNi, have been compared. It has been shown that the alloys exhibit superplasticity with 300–800% …
WebMay 1, 2009 · For the H-FSP sample, the optimum strain rate for superplasticity was observed to be 1 × 10 −2 s −1. The largest elongation of 890% was achieved at 450 °C and 1 × 10 −2 s −1. Above 450 °C, the superplasticity of the H-FSP sample decreased with increasing the testing temperature (Fig. 3 ). WebDec 21, 2015 · High carbon fine-grained (FG) steels (containing 1–2% C in weight %) were observed to exhibit superplasticity at 0.5–0.65 Tm and strain rate of ~10 −4 –10 −3 s 20,21.
WebPhenomena and mechanism on superplasticity of duplex stainless steels. ... The duplex sta-inless steels have an attractive combination of excellent high strength with excellent corrosion resistance, thus they are suitable for constmctional and petrochemical applications . Furthermore, the duplex stainless steels having free grained ... WebJul 15, 1995 · High strength and high strain rate superplasticity in a Mg-Mg {sub 2}Si composite Full Record Related Research Abstract Magnesium alloys have high potential as structural materials because of low density. Recently, it was shown that magnesium composite containing.
WebIt is often thought that superplasticity is only found at relatively low strain rates, typically about 10 –4 to 10 –3 s –1. Several recent studies have indicated, however, that …
WebOct 24, 2024 · The majority of commercial aluminum alloys are superplastic in the range of strain rates of 10 –4 –10 –3 s –1 with elongations of 200–400%. At a strain rate of 10 –2 s –1, the elongation does not exceed 150%, and the strain-rate sensitivity of the flow stress is sharply reduced, which does not make it possible to use sheets for forming. fixing a chipped tooth costWebUltra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress … fixing a camper roofWebJun 26, 2024 · Doping TiO 2 and MgO into ZrO 2 can achieve a large strain of 206% at a higher strain rate of 1.2 × 10 −4 s −1 and a relatively lower temperature of 1350 °C . Ti/Mn co-doped Al 2 O 3 with 3 mol. % ZrO 2 can be shape-formed to 100% strain at a temperature as low as 1280 °C [ 16 ]. fixing a ceiling light fixtureWebJun 1, 2024 · Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy … can multiple beans mapped to same tableWebDec 31, 1997 · High strain rate superplasticity (HSRS) has been investigated at 600-650 C and strain rate of 10 {sup -3}-10 {sup 0} sec {sup -1} in tension, and total elongation of 300 - 500% was observed at strain-rate of 10 {sup -1} sec {sup -1}. fixing a chip in quartz countertopWebSuperplasticity is a process in which polycrystalline materials undergo several hundred to several thousand percent of tensile elongation at an appropriate temperature and strain rate. It is greatly effective in reducing the weight and production cost by minimizing the processing steps of machining and joining. fixing a chipped tooth at homeWebSuperplasticity at high strain rates in excess of 10 2 s 1, required for viable industry-scale application, has usually only been achieved in low-strength aluminium and magnesium alloys. fixing a chip in your windshield