Microstructures and mechanical properties of sprayformed white irons

Yunfeng Yang (Corresponding Author), Ari Hirvonen, Jouko Virta, Simo-Pekka Hannula

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Abstract

This paper presents a preliminary research in which sprayforming process is used to modify the eutectic carbide morphology and properties of white irons. The sprayformed white irons are compared with those of traditional cast samples. As a rapid solidification process, sprayforming dramatically reduces carbide size and modifies the carbide morphology. Isolated eutectic carbides can be achieved with a low chromium iron. With adequate alloying of chromium, vanadium and molybdenum, the carbides are formed as fine and evenly distributed nodules in the order of microns. Segregation problems normally encountered in high vanadium alloy casting are eliminated. Sprayformed iron may offer excellent combination of hardness and toughness for high wear performance with heavy impact loading. Machinability of the iron is also improved.

The sprayformed irons may be suitable to make such wear resistant components of near net shape as compound tubes and clad rolls. The potential of sprayformed white irons in these applications and the factors affecting the bonding of the cladding layer to the substrate as well as their influence on the microstructures are discussed.
Original languageEnglish
Pages (from-to)333-337
Number of pages5
JournalInternational Journal of Cast Metals Research
Volume16
Issue number1-3
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

Carbides
Iron
Mechanical properties
Microstructure
Chromium
Eutectics
Wear of materials
Vanadium alloys
Vanadium
Rapid solidification
Machinability
Alloying
Toughness
Casting
Hardness
Substrates
Molybdenum

Cite this

Yang, Yunfeng ; Hirvonen, Ari ; Virta, Jouko ; Hannula, Simo-Pekka. / Microstructures and mechanical properties of sprayformed white irons. In: International Journal of Cast Metals Research. 2003 ; Vol. 16, No. 1-3. pp. 333-337.
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Microstructures and mechanical properties of sprayformed white irons. / Yang, Yunfeng (Corresponding Author); Hirvonen, Ari; Virta, Jouko; Hannula, Simo-Pekka.

In: International Journal of Cast Metals Research, Vol. 16, No. 1-3, 2003, p. 333-337.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Microstructures and mechanical properties of sprayformed white irons

AU - Yang, Yunfeng

AU - Hirvonen, Ari

AU - Virta, Jouko

AU - Hannula, Simo-Pekka

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N2 - This paper presents a preliminary research in which sprayforming process is used to modify the eutectic carbide morphology and properties of white irons. The sprayformed white irons are compared with those of traditional cast samples. As a rapid solidification process, sprayforming dramatically reduces carbide size and modifies the carbide morphology. Isolated eutectic carbides can be achieved with a low chromium iron. With adequate alloying of chromium, vanadium and molybdenum, the carbides are formed as fine and evenly distributed nodules in the order of microns. Segregation problems normally encountered in high vanadium alloy casting are eliminated. Sprayformed iron may offer excellent combination of hardness and toughness for high wear performance with heavy impact loading. Machinability of the iron is also improved.The sprayformed irons may be suitable to make such wear resistant components of near net shape as compound tubes and clad rolls. The potential of sprayformed white irons in these applications and the factors affecting the bonding of the cladding layer to the substrate as well as their influence on the microstructures are discussed.

AB - This paper presents a preliminary research in which sprayforming process is used to modify the eutectic carbide morphology and properties of white irons. The sprayformed white irons are compared with those of traditional cast samples. As a rapid solidification process, sprayforming dramatically reduces carbide size and modifies the carbide morphology. Isolated eutectic carbides can be achieved with a low chromium iron. With adequate alloying of chromium, vanadium and molybdenum, the carbides are formed as fine and evenly distributed nodules in the order of microns. Segregation problems normally encountered in high vanadium alloy casting are eliminated. Sprayformed iron may offer excellent combination of hardness and toughness for high wear performance with heavy impact loading. Machinability of the iron is also improved.The sprayformed irons may be suitable to make such wear resistant components of near net shape as compound tubes and clad rolls. The potential of sprayformed white irons in these applications and the factors affecting the bonding of the cladding layer to the substrate as well as their influence on the microstructures are discussed.

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