http://cml.postech.ac.kr

Computational Metallurgy Laboratory

Status and Strategic Plan

STATUS

September 2005

4 further post-doctoral assistants (2 BOT and 2 GIFT)

Materials

Physics

Chemical engineering

Computer science

Mathematics

Metallurgy

Korean

English

Chinese

Gujarati

Bengali

Telagu

Hindi

German

Slavik

Latin

Greek

FORTRAN

C

C++

Visual Basic

JAVA

bainite

current projects

domains of steels with identical properties

(C, Mn, Si, P, S, Cr, Ni, Mo, Ti,

Nb, V, Al, N, B, Cu, FDT, CT)

current projects

-TRIP Steel

Topological changes in grain parameters during deformation

current projects

current projects

Rigorous models for the prediction of transformation texture

Texture and strain due to mechanical twinning

current projects

ab-initio calculations

current projects

current projects

electropulsing

current projects Superbainite

current projects

Hot-press forming

current projects

Phase field modelling

Simultaneous casting

current projects

•“Severely deformed martensite”, ISIJ International, accepted for publication, by L. Huifang and W. J. Liu

•“Low-temperature, low-carbon bainite”, submitted to Materials Science and Technology, H.-S. Yang and H. K. D. H. Bhadeshia

•“Plastic strain due to mechanical twinning in austenitic TWIP steels”, submitted to Materials Science and Technology, B. Qin and H. K. D. H. Bhadeshia

•“On the performance of neural networks in materials science”, submitted to Materials Science and Technology, H. K. D. H. Bhadeshia, R. C. Dimitriu, S. Forsik, J. H. Pak and J. H. Ryu

•“Influence of silicon on cementite precipitation in steels”, submitted to Materials Science and Technology, E. Kozeschnik and H. K. D. H. Bhadeshia

published software

New book being written by R. Qin on phase-field modelling, based on his teaching in GIFT

Interactions with IndustryPOSCO: Transfer of software for strength of hot-rolled steels

POSCO: Transfer of software for TTT diagram calculation

POSCO: Transfer of software for TRIP-steel simulations

ESAB (Sweden): Transfer of software for strength of welds

• Student collaboration on TRIP steel (Guo Lei, WeiJei Liu)

• BOT: -TRIP (Swarup Ghosh, Hong Liang Yi)• BOT: Electropulsing (Rongshan Qin)• Precursor to BOT: Simultaneous casting

(Yong Ki Kim, Rongshan Qin)• BOT: Superbainite• BOT: TWIP-assisted steel (WeiJei Liu)• Hot-press forming (Shgh Woei Ooi)

Interactions with Industry

In Gee Kim,

KISTI Supercomputer Expert for (Small and Medium Business) Support

Interactions with Industry

Strategy

science

publication in journals

effective dissemination

effective local, national and international collaboration

lead industry with new steel concepts

good teaching

Role of models is often overstated.

Scientific progress can happen from simple observations.

perfect computation simply reproduces Nature, does not explain her

Anderson, Nobel Laureate, 1977

•lead to unexpected outcome, verifiable

•created or used in hindsight to explain diverse observations

•existing models adapted or grouped in novel manner to design

•used to express data, reveal patterns or implemented in control algorithms

QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Charpy

fatigue

corrosion

tensile

critical stress intensity