ZrO 2 Matrix Toughened Ceramic Material‐Strength and Toughness

Author(s):  
Bin Qi ◽  
Shuaishuai Liang ◽  
Yongjian Li ◽  
Chenchen Zhou ◽  
Haibo Yu ◽  
...  
2014 ◽  
Vol 59 (1) ◽  
pp. 403-406 ◽  
Author(s):  
A. Karwiński ◽  
W. Lesniewski ◽  
P. Wieliczko ◽  
M. Małysza

Abstract This paper discusses technical problems related with casting of titanium alloys in centrifugal vacuum furnaces. The potentials of an analysis of the centrifugal casting process carried out in the Flow3D software CFD (Computational Fluid Dynamics) were presented. Simulations were carried out on a model set, which enables casting of two connecting rods for an I.C. engine. Changes in the mould filling process were examined for the three selected spinning velocities of the casting arm. The ranges of the metal flow velocity in mould were calculated as well as metal pressure in mould after reaching a predetermined spinning velocity. The results and the adopted mould geometry enabled determination of the magnitude of stress occurring in mould at the time of filling it with liquid titanium alloy. The paper presents a methodology for testing of the ceramic material strength using a four-point loading arrangement. The strength of the ceramic material was determined on samples heated at different temperatures. The obtained results enabled a thesis to be formulated that for pouring of moulds in a centrifugal vacuum furnace, the layered foundry ceramic moulds can be safely used, and the use of moulds that will provide the directional solidification of metal should be possible as well.


2020 ◽  
Vol 9 (1) ◽  
pp. 32-37
Author(s):  
Ruslan Hidayat ◽  
Saiful Arfaah

One of the most important factors in the structure of the pile foundation in the construction of the bridge is the carrying capacity of the soil so as not to collapse. Construction of a bridge in the village of Klitik in Jombang Regency to be built due to heavy traffic volume. The foundation plan to be used is a pile foundation with a diameter of 50 cm, the problem is what is the value of carrying capacity of soil and material. The equipment used is the Dutch Cone Penetrometer with a capacity of 2.50 tons with an Adhesion Jacket Cone. The detailed specifications of this sondir are as follows: Area conus 10 cm², piston area 10 cm², coat area 100 cm², as for the results obtained The carrying capacity of the soil is 60.00 tons for a diameter of 30 cm, 81,667 tons for a diameter of 35 cm, 106,667 tons for a diameter of 40 cm, 150,000 tons for a diameter of 50 cm for material strength of 54,00 tons for a diameter of 30 cm, 73,500 tons for a diameter of 35 cm, 96,00 tons for a diameter of 40 cm, 166,666 tons for a diameter of 50 cm


Alloy Digest ◽  
1990 ◽  
Vol 39 (11) ◽  

Abstract UNS G 81150 is a low-carbon nickel-chromium-molybdenum carburizing steel recommended for applications where a core of medium strength and toughness combined with a wear-resistant carburized case is sufficient. It has medium hardenability and can be used without carburizing. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-453. Producer or source: Alloy steel mills and foundries.


Alloy Digest ◽  
1981 ◽  
Vol 30 (7) ◽  

Abstract SAE 8642 is a triple-alloy steel that can be hardened by austenitizing and quenching in oil. This steel has moderate hardenability with relative high strength and toughness, especially in the quenched-and-tempered condition. It is used in a wide range of components, parts and tools; examples are bolts, shafts, gears, wrenches, axles and housings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-382. Producer or source: Alloy steel mills and foundries.


Alloy Digest ◽  
1980 ◽  
Vol 29 (12) ◽  

Abstract AISI 8627 is an alloy steel of moderate-to-good hardenability for carburizing and other applications. When carburized, its core has good strength and toughness, and it is recommended for heavy-duty applications such as gears, shafts, cams, and machinery parts. Also, it can be used in the hot-rolled, normalized or water-quenched-and-tempered condition without carburizing. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-379. Producer or source: Alloy steel mills and foundries.


Alloy Digest ◽  
1985 ◽  
Vol 34 (8) ◽  

Abstract COLUMBIA S6 is a silicon-manganese shock-resisting tool steel with fairly high hardenability. It offers superior toughness and wear resistance when compared to conventional shock-resisting steels heat treated to Rockwell C 54 to 56. For optimum strength and toughness, parts should be tempered within the range 400 to 600 F. Among its many applications are shear blades, punches, hand chisels and pneumatic tools. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-445. Producer or source: Columbia Tool Steel Company.


Alloy Digest ◽  
1996 ◽  
Vol 45 (7) ◽  

Abstract Micro-Melt 10 is a high-vanadium tool steel A11 produced with a refined microstructure by powder metallurgy. The tool steel possesses superior wear resistance with good strength and toughness. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on wear resistance as well as forming and machining. Filing Code: TS-542. Producer or source: Carpenter.


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