Sprayformed hot work steels for rapid tooling

Yunfeng Yang, Simo-Pekka Hannula

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

The present work compares microstructures of hot work steels made by different processes (they are sprayforming and casting) and a commercially supplied H13 steel. Material benefits are recognized by sprayforming hot working tools such as die inserts for hot forging. The sprayformed hot work steels present a fine and homogeneous microstructure, which implies that, at a similar toughness level, the sprayformed steel can be higher alloyed, so that the thermal fatigue and wear resistance at elevated temperatures can be improved. A series of steels with higher vanadium content than commercial hot work steels are developed. There are no segregation and carbide network problems usually encountered in conventional ingot/forging processed high-vanadium steels. Microstructure and hardness of the new sprayformed steels are studied under different heat treatment conditions. It is justified that these sprayformed steels can be directly used for tooling without high temperature hardening. Sprayforming the tool steels into a precision ceramic mould is demonstrated to extend the economic benefits, so that a net shape production tool can be rapidly made. Features of the rapid tooling process are also discussed.
Original languageEnglish
Pages (from-to)169-172
JournalJournal of Materials Science and Technology
Volume19
Issue numberSupplement 1
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

Steel
Vanadium
Forging
Microstructure
Thermal fatigue
Hot working
Tool steel
Ingots
Toughness
Wear resistance
Carbides
Hardening
Casting
Hardness
Heat treatment
Fatigue of materials
Temperature
Economics

Keywords

  • rapid tooling
  • sprayforming
  • hot working steel
  • die insert

Cite this

Yang, Y., & Hannula, S-P. (2003). Sprayformed hot work steels for rapid tooling. Journal of Materials Science and Technology, 19(Supplement 1), 169-172.
Yang, Yunfeng ; Hannula, Simo-Pekka. / Sprayformed hot work steels for rapid tooling. In: Journal of Materials Science and Technology. 2003 ; Vol. 19, No. Supplement 1. pp. 169-172.
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Yang, Y & Hannula, S-P 2003, 'Sprayformed hot work steels for rapid tooling', Journal of Materials Science and Technology, vol. 19, no. Supplement 1, pp. 169-172.

Sprayformed hot work steels for rapid tooling. / Yang, Yunfeng; Hannula, Simo-Pekka.

In: Journal of Materials Science and Technology, Vol. 19, No. Supplement 1, 2003, p. 169-172.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Sprayformed hot work steels for rapid tooling

AU - Yang, Yunfeng

AU - Hannula, Simo-Pekka

PY - 2003

Y1 - 2003

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AB - The present work compares microstructures of hot work steels made by different processes (they are sprayforming and casting) and a commercially supplied H13 steel. Material benefits are recognized by sprayforming hot working tools such as die inserts for hot forging. The sprayformed hot work steels present a fine and homogeneous microstructure, which implies that, at a similar toughness level, the sprayformed steel can be higher alloyed, so that the thermal fatigue and wear resistance at elevated temperatures can be improved. A series of steels with higher vanadium content than commercial hot work steels are developed. There are no segregation and carbide network problems usually encountered in conventional ingot/forging processed high-vanadium steels. Microstructure and hardness of the new sprayformed steels are studied under different heat treatment conditions. It is justified that these sprayformed steels can be directly used for tooling without high temperature hardening. Sprayforming the tool steels into a precision ceramic mould is demonstrated to extend the economic benefits, so that a net shape production tool can be rapidly made. Features of the rapid tooling process are also discussed.

KW - rapid tooling

KW - sprayforming

KW - hot working steel

KW - die insert

M3 - Article

VL - 19

SP - 169

EP - 172

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

SN - 1005-0302

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