TRIZ approach for machining process innovation in cryogenic environment

Jaharah A Ghani, A. R. Natasha, Che Hassan Che Haron, J. Syarif

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents the utilisation of TRIZ approach in machining process of AISI 4340 in cryogenic environment which lead to product improvement in turning process. The machining study is carried out in two stages; FEM simulation for finding the optimum condition and machining experiment to visualise the product improvement that involved plastic deformation. The simulation result revealed that at moderate to high cutting speed, high feed rate and high depth of cut will result in high temperature that enable for the change in phase of AISI 4340 from retained austenite to fully martensite. A sample from machining experiment at optimum cutting condition found that the microstructure changes beneath the machined until at the depth of ∼7 μm with high hardness to 8,500 N/mm2 Martens hardness at the machined surface. This hardness is equivalent to the hardness obtained in conventional case hardening process that is required after the machining of AISI 4340 in their application as automotive engine parts in order to enhance these parts in their service lives. This study reveals that the TRIZ approach helps to systematically analyse the various outcomes in this study started with process limitation, problem identification, axiomatic and Su-field analysis.

Original languageEnglish
Pages (from-to)286-297
Number of pages12
JournalInternational Journal of Materials and Product Technology
Volume53
Issue number3-4
DOIs
Publication statusPublished - 2016

Fingerprint

Cryogenics
Machining
Innovation
Hardness
Case hardening
Martensite
Service life
Austenite
Plastic deformation
Experiments
Engines
Finite element method
Microstructure
Temperature

Keywords

  • Cryogenic Turning
  • High Hardness.
  • Machining Process For Product Improvement
  • TRIZ

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

TRIZ approach for machining process innovation in cryogenic environment. / A Ghani, Jaharah; Natasha, A. R.; Che Haron, Che Hassan; Syarif, J.

In: International Journal of Materials and Product Technology, Vol. 53, No. 3-4, 2016, p. 286-297.

Research output: Contribution to journalArticle

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