Semi-solid processing of ultrahigh-carbon steel castings

Ramadan, Mohamed; Takita, Mitsuharu; Nomura, Hiroyasu; El-Bagoury, Nader

doi:10.1016/j.msea.2006.05.132

Cited by 21 publications

(18 citation statements)

References 13 publications

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“…Various workers [14][15][16][17] are investigating the use of a cooling slope (similar to the New Rheocasting-NRCprocess or the work of Haga and co-workers [18,19]) with some success. Vibratory casting has also been used [20], including to obtain functionally graded material based on hydroxyapatite and 316L stainless steel [21].…”

Section: Introductionmentioning

confidence: 99%

A review on steel thixoforming

Rassili

Atkinson

2010

Transactions of Nonferrous Metals Society of China

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Abstract：Steel is a particularly challenging material to semi-solid process because of the high temperatures involved and the potential for surface oxidation. Here the experience of semi-solid processing will be reviewed and the current situation in relation to commercial application assessed. The review will include discussion of the range of potential steel materials which are amenable to thixoformingn and identification of suitable steels; modelling of die fill and rheological properties of semi solid steel; technology considerations for industrialisation; die development and the properties of thixoformed products.

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Section: Introductionmentioning

confidence: 99%

A review on steel thixoforming

Rassili

Atkinson

2010

Transactions of Nonferrous Metals Society of China

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Section: Routes To Thixoformable Starting Materialsmentioning

confidence: 99%

A review of the semi-solid processing of steel

Atkinson

Rassili

2010

Int J Mater Form

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Steel is a particularly challenging material to semi-solid process because of the high temperatures involved and the potential for surface oxidation. Here the experience of semi-solid processing will be reviewed and the current situation in relation to commercial application assessed. The review will include discussion of the range of potential steel materials which are amenable to thixoforming including thermodynamic prediction of suitable alloy compositions.

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“…Semi-solid casting is a promising process in the foundry industry used to improve the structures and properties of alloys (Yu et al, 1999;Kapranos et al, 2000;Mao et al, 2001;Cavaliere et al, 2004;Poolthong et al, 2003;Ramadan et al, 2006;Wiengmoon et al, 2007). In this process, molten alloy is partially solidified before shaping.…”

Section: Introductionmentioning

confidence: 99%

“…Usually, high melting point alloys is hard to cast by semi-solid method. However, the sloped cooling plate method can produce a fine globular grain structure in both high-and low-melting point alloys (Ramadan et al, 2006). This study investigated the microstructure and hardness of sterling silver cast by sloped cooling plate method.…”

Section: Introductionmentioning

confidence: 99%

Hardness and Microstructure of Sterling Silver Cast by Sloped Cooling Plate Method

Chomsaeng¹,

Poolthong²

2017

CMUJNS

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Semi-solid casting was introduced to improve the mechanical properties of sterling silver by sloped cooling plate technique. Ag alloys (93.5 wt%) were cast from an induction furnace at 1,000°C onto a sloped cooling plate. The pouring angles and distances were 30-60 degree and 200-250 mm, respectively. Effects of pouring angles and casting distances on hardness and microstructure of the sterling silver were investigated. Then, the solution was treated, followed by quenching and artificial aging. The specimens were checked with Vickers microhardness tester, light microscope, and scanning electron microscope (SEM). Hardness of the as-cast sample from the semi-solid process was 63-78 HV. The 60-minute aged sample that was cast at a 30° angle and 250 mm distance obtained the maximum hardness of 148.5 HV. The microstructure of the as-cast sample consisted primarily of α-phase and eutectic structure. A spheroidal and short dendrite structure was formed in the as-cast sample. After aging, precipitation occurred substantially within the α-phase. SEM images revealed that the aged sample with the highest hardness contained Cu-rich and Ag-rich precipitates in the α-phase.

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Semi-solid processing of ultrahigh-carbon steel castings

Cited by 21 publications

References 13 publications

A review on steel thixoforming

A review on steel thixoforming

A review of the semi-solid processing of steel

Hardness and Microstructure of Sterling Silver Cast by Sloped Cooling Plate Method

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