Microstructures and properties of rapidly solidified Cu90Zr10-x Al x alloys

Zhou, Bingwen; Jiang, Xin; Yin, Shijian; Zhang, Xingguo; Gou, Shu-ping

doi:10.1007/s41230-016-6021-y

Cited by 8 publications

(9 citation statements)

References 19 publications

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“…Closer examination reveals that the carbides in FMM side has complex regular laminar morphology and are separated by the matrix with smooth boundaries, while the carbides in PMM side has irregular laminar morphology and have no clear matrix boundary. Morphology change is accordance with Zhou's result by increasing cooling rate [2] and by continuous casting method [4]. Result of EDS indicates the main elements in the carbides are, except for molybdenum and tungsten, iron, vanadium, and chromium.…”

Section: Methodssupporting

confidence: 81%

“…Among them, M2 is one of the most popular one [1][2][3]. Traditionally, M2 high-speed steel manufacturing includes two steps, namely the mold casting and subsequent hot working like forging and rolling, which can break the coarse carbides network and refine structure [4,5]. Electroslag remelting is another popular process for manufacturing high-speed steel with improved solidification structures [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Increasing Solidification Rate of M2 High-Speed Steel Ingot by Fusible Metal Mold

Zhang

Chen

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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As one of the most popular used high-speed steels, M2 possesses excellent hardness and toughness as cutting tools. Networks of eutectic carbides distributing in the inter-dendritic region are academically considered to be the typical microstructure of M2, which can be refined by increasing cooling rate. In this paper, a novel casting method named fusible metal mold (FMM) is employed to refine the microstructure of M2 high-speed steel. Results show that FMM casting method can improve cooling rate by 100% without any contamination of the melts' composition.

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Section: Methodssupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Increasing Solidification Rate of M2 High-Speed Steel Ingot by Fusible Metal Mold

Zhang

Chen

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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“…As shown in Figure a, the eutectic M6C distributed in the grain boundaries was formed in a continuous web with a wide area. As we know, M6C is not easy to break in the forging process, which seriously affects the macroscopic properties of HSS . After inoculation, as shown in Figure b, the size of the M6C Ledeburite was significantly reduced, and fishbone carbide was transformed from a coarse mesh into a long and slender strip, which was more conducive to be broken in the forging process.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and Properties’ Evaluation of W18Cr4V Modified by Fe–Zr–Nb–N–B Nano‐Powder Inoculants

Cui

Gao

Zhao

2016

steel research int.

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High speed steel (HSS) is widely used in the production of high‐speed cutting tools and roll etc. Fe–Nb–Zr–N–B amorphous nanocrystalline powder inoculants are designed and prepared by melt and ball‐milling. The carbides in inoculants are easy to act as the nucleus of heterogeneous nucleation during the solidification of the HSS melt, which can refine the grain size of as‐cast HSS significantly. At the same time, it can further improve the morphology and distribution of carbides in the HSS matrix. The phase composition of rapid solidified Fe–Nb–Zr–N–B inoculants is analyzed using XRD and TEM. With the addition of Fe–Nb–Zr–N–B inoculant, the grain size of as‐cast HSS refined evidently, the Net thickness and dendritic spacing decrease obviously, simultaneously, the distribution of the carbides in HSS matrix is more homogeneous. That results lead to a significant improvement of the microstructure and mechanical properties of the HSS. The grain size of HSS in quench state decreases obviously after inoculation treatment with Fe–Nb–Zr–N–B. Meanwhile, the hardness and red hardness as well as the abrasion performance are improved obviously.

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“…Generally, transparent films with an OTR of 25.4 μm film below 5 mL/m 2 ·d (OP < 14.55 × 10 −15 mL·m/m 2 ·s·Pa) are considered as the high barrier materials in food packaging . Our PPC/PVA10/PPC film meets the requirement when the humidity is below 70%.…”

Section: Resultsmentioning

confidence: 99%

Biodegradable high oxygen barrier membrane for chilled meat packaging

Dong

Yun

et al. 2015

J of Applied Polymer Sci

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Chilled" meat is more nutritional, healthy and hygienic than the meat kept at ambient temperature. "Poly(propylene carbonate) (PPC) and poly(vinly alcohol) (PVA) were used to prepare biodegradable three-layer PPC/PVA/PPC films with high barrier and tensile properties. The potential benefits of the developed films were also evaluated on the shelf life of chilled meat products. Compared to PPC film, using 20 wt % PVA as an intermediate layer in PPC/PVA/PPC film remarkably enhanced oxygen barrier performance at 0 and 50 RH % by about 500 times, tensile strength by about 8 times, and Young's modulus by nine times, but no beneficial effect on water vapor barrier performance has been observed. A new "sandwich" type of completely biodegradable material with high barrier was obtained. The application of PPC/PVA20/PPC film as the packaging material of chilled meat was effectively kept the total viable count (TVC) and total volatile basic nitrogen (TVB-N) to acceptable levels in chilled meats until 19th day of storage at 4 C, however, the spoilage occurred within 11th and 14th days of refrigerated storage in term of TVC and TVB-N, respectively, in the chilled meats packed with only PPC. Herein, we report that PPC/PVA/PPC three-layer film can be a promising well-defined biodegradable material with excellent potential in chilled meat packaging.

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Microstructures and properties of rapidly solidified Cu90Zr10-x Al x alloys

Cited by 8 publications

References 19 publications

Increasing Solidification Rate of M2 High-Speed Steel Ingot by Fusible Metal Mold

Increasing Solidification Rate of M2 High-Speed Steel Ingot by Fusible Metal Mold

Microstructure and Properties’ Evaluation of W18Cr4V Modified by Fe–Zr–Nb–N–B Nano‐Powder Inoculants

Biodegradable high oxygen barrier membrane for chilled meat packaging

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