Corrigendum to “Fabrication of microporous inorganic microneedles by centrifugal casting method for transdermal extraction and delivery” [Int. J. Pharm. 558 (2019) 299–310]

Using a centrifugal casting method, along with deformation and aging, we produced a high-strength, low-anisotropy Al-Li plate. The electron probe microanalysis, transmission electron microscope, differential scanning calorimetry, and X-ray diffraction were used to clarify the evolution of strengthening phases. Experimental results showed that centrifugal-cast Al-Li plate consisted of intragrain δ′—(Al,Cu)3Li precipitate and interdendritic θ′—Al2Cu particles. After cold-rolling to a reduction ratio of 60% and annealing at 800 K for 90 min, both primary θ′ and δ′ were dissolved in solid solution. Aging at 438 K for 60 h led to the formation of two kinds of precipitates (needle-like T1—Al2CuLi and spherical δ′ in two sizes), which acted as the main strengthening phases. The average values of ultimate tensile strength and yield strength for the anneal-aged plate reached 496 MPa and 408 MPa, with a total elongation of 3.9%. The anneal-aged plate showed mechanical anisotropy of less than 5%. The tensile fracture morphology indicated a typical intergranular fracture mode.

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Novel Centrifugal Casting Method by using Machining Chips

Transactions of the Materials Research Society of Japan ◽

10.14723/tmrsj.38.21 ◽

2013 ◽

Vol 38 (1) ◽

pp. 21-26

Author(s):

Yoshimi Watanabe ◽

Yasumasa Oya ◽

Hisashi Sato

Keyword(s):

Centrifugal Casting ◽

Casting Method

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Properties and CA4GE-Engine Test of TiAl-Based Alloy Valves by Permanent Mold Casting

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.139-141.557 ◽

2010 ◽

Vol 139-141 ◽

pp. 557-560

Author(s):

Wen Bin Sheng ◽

Chun Xue Ma ◽

Wan Li Gu

Keyword(s):

Tial Alloy ◽

Centrifugal Casting ◽

Casting Process ◽

Vacuum Arc ◽

Permanent Mold ◽

Casting Method ◽

Arc Melting ◽

Vacuum Arc Melting ◽

Mold Casting ◽

Induction Skull Melting

TiAl-based alloy valves were manufactured by combining charges compressed /vacuum arc melting (VA)/ induction skull melting (ISM) procedure with permanent mold centrifugal casting method. Microstructures, compositions and mechanical properties of as-cast and hot isostatical pressed (HIPed) valves are detected. Results show that the permanent mold centrifugal casting process obviously refines the size of grain in TiAl alloy and the tensile strength of as-cast and HIPed valves are 550MPa and 580MPa at 20°C, 370MPa and 470MPa at 815°C, respectively. As-cast specimens show ~0% elongation at 20°C and 1~2% at 815°C, while HIPed ones show an elongation of 1~2% at room temperature and about 10% at 815°C. Furthermore, a 200-hour test was carried out with CA4GE-engine, which demonstrated the possibility of as-cast TiAl alloy valves for the substitution of present steel ones.

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Study on Rapid Casting for Complex Parts

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.121-126.433 ◽

2011 ◽

Vol 121-126 ◽

pp. 433-437

Author(s):

Feng Zeng ◽

Shan Yao ◽

Zhong Fei Jiao ◽

Shu Ming Zhao ◽

Tong Yang

Keyword(s):

Centrifugal Casting ◽

Casting Method ◽

Cloud Data ◽

Coordinate Measurement ◽

Rapid Casting ◽

Precision Casting ◽

Complex Cavity ◽

Simple Technology ◽

Five Axis ◽

Complex Parts

A rapid casting method for complex parts is presented. In this method, casting moulds with complex cavity are manufactured by self-created rapid prototyping approach which called Selected Laser Partitioning for Prototyping. After surface coating treatment for moulds, complex parts are obtained by centrifugal casting. As application cases, metal impeller was casted by this method. A self-developed five-axis coordinate measurement machine was used to process the surface measuring of impeller. The Dimension accuracy grade of impeller is CT-3 and the surface roughness is Ra 6.3µm through making comparisons directly between CAD model and point cloud data of impeller surface. The result shows that this rapid casting method which has the characters of simple technology and low production cost reaches the level of precision casting.

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Cold model for process of a Ni-aluminide/steel clad pipe by a reactive centrifugal casting method

Materials Letters ◽

10.1016/j.matlet.2010.10.042 ◽

2011 ◽

Vol 65 (3) ◽

pp. 467-470 ◽

Cited By ~ 6

Author(s):

Yoshimi Watanabe ◽

Yoshifumi Inaguma ◽

Hisashi Sato

Keyword(s):

Centrifugal Casting ◽

Casting Method ◽

Cold Model

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Optimization of the In-Situ Al-Si Base Functionally Graded Material Fabricated by Centrifugal Casting

MRS Proceedings ◽

10.1557/proc-702-u9.3.1 ◽

2001 ◽

Vol 702 ◽

Author(s):

Yoshihiro Oya-Seimiya ◽

Tetsumori Shinoda ◽

Yoshimi Watanabe

Keyword(s):

Functionally Graded Material ◽

Centrifugal Casting ◽

Functionally Graded ◽

Outer Side ◽

Casting Method ◽

Graded Material ◽

Base Composite

ABSTRACTThe fabricating conditions for the in-situ Al-Si base composite by the centrifugal casting method (CCM) have been examined. The crystallized Si particles with a lower density distribute in a gradient fashion as densely on the inner and thinly on the outer side of the wall of the cylindrical CCM-composite. Synthetically, the 25 mol% Si composite is recommended for the application like the engine liner.

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