In Situ Measurements of Grain Growth and Recrystallization by Laser Ultrasonics

Militzer Matthias; Thomas Garcin; Warren J. Poole

doi:10.4028/www.scientific.net/MSF.753.25

Paper Titles

Study of Recovery and Recrystallisation in a Folded Al Alloy
p.7

Extensions of Electron Diffraction Based Techniques in Crystallographic Characterization
p.11

Recrystallization and Grain Boundary Formation in an 18-Carat Gold Alloy Studied by Mechanical Spectroscopy
p.17

Measurement of Strain and Lattice Rotation in the Particle Deformation Zone
p.21

In Situ Measurements of Grain Growth and Recrystallization by Laser Ultrasonics
p.25

The Industrial Application of Microstructure Modelling: A View out of the Process Window
p.31

Importance of Local Structural Variations on Recrystallization
p.37

Texture and Microstructure Evolution of a Zirconium Alloy During Uniaxial Compression at 500°C
p.42

3D Analysis of Microstructure Changes Occurring during Creep Tests of Ultra-Fine Grained Materials
p.46

HomeMaterials Science ForumMaterials Science Forum Vol. 753In Situ Measurements of Grain Growth and...

In Situ Measurements of Grain Growth and Recrystallization by Laser Ultrasonics

Abstract:

Laser ultrasonics for metallurgy (LUMet) is an innovative sensor technology for in-situ measurement of microstructure evolution during thermomechanical processing. This unique sensor has been attached to a Gleeble 3500 thermomechanical simulator for dedicated laboratory studies during processing of steel, aluminum, magnesium and titanium samples. Advanced processing software has been developed for the measurement of grain size and texture evolution from laser ultrasonic signals. Results of austenite grain growth measurements in low carbon steels will be described to demonstrate the capabilities of the LUMet technique. Further, applications of the system to measure recrystallization of ferrite and austenite formation during intercritical annealing simulations of dual phase steels will be presented. The ability to rapidly acquire data both during a single test and for multiple conditions over a range of conditions from different samples has important implications on expediting process modelling and alloy design. Although certain limitations exist, the LUMet technique offers a very reliable characterization platform with a number of potential applications in metallurgical process engineering.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 753)

Pages:

25-30

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.753.25

Citation:

Cite this paper

Online since:

March 2013

Authors:

Militzer Matthias, Thomas Garcin, Warren J. Poole

Keywords:

Attenuation, Austenite Grain Size, Laser Ultrasonics, Recrystallization, Velocity

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] M. Dubois, A. Moreau, A. Dawson, M. Militzer, J. F. Bussière, Laser ultrasonic measurement of microstructure evolution during metals processing, RTO AVT Workshop on "Intelligent Processing of High Performance Materials, 9 (1998) 1-11.

Google Scholar

[2] M. Dubois, M. Militzer, A. Moreau, J. F. Bussière, A new technique for the quantitative real-time monitoring of austenite grain growth in steel, Scripta Mater, 42 (2000) 867–874.

DOI: 10.1016/s1359-6462(00)00305-5

Google Scholar

[3] S. Sarkar, A. Moreau, M. Militzer, W. J. Poole, Evolution of austenite recrystallization and grain growth using laser ultrasonics, Metall. Mater. Trans. A. 39 (2008) 897–907.

DOI: 10.1007/s11661-007-9461-6

Google Scholar

[4] S. E. Kruger, E. B. Damm, Monitoring austenite decomposition by ultrasonic velocity, Mater. Sci. Eng. A, 425 (2006) 238–243.

DOI: 10.1016/j.msea.2006.03.056

Google Scholar

[5] C. B. Scruby, L. E. Drain, Laser ultrasonics, Adam Hilger, Bristol, (1990).

Google Scholar

[6] R. K. Ing, J.P. Monchalin, Broadband optical detection of ultrasound by two-wave mixing in a photorefractive crystal, Appl. Phys. Letters. 59 (1991) 3233–3235.

DOI: 10.1063/1.105742

Google Scholar

[7] S. E. Kruger, G. Lamouche, J.P. Monchalin, On line monitoring of wall thickness and austenite grain size on a seamless tubing production line at the Timken Company, AISTech Proceedings, 2 (2005) 553–560.

Google Scholar

[8] S. E. Kruger, A. Moreau, M. Militzer, T. Biggs, In-situ laser-ultrasonic monitoring of the recrystallization of aluminum alloys, Mater. Sci. Forum, 426, (2003) 483–488.

DOI: 10.4028/www.scientific.net/msf.426-432.483

Google Scholar

[9] M. Maalekian, R. Radis, M. Militzer, A. Moreau, W. J. Poole, In situ measurement and modelling of austenite grain growth in a Ti/Nb microalloyed steel, Acta Mater. 60 (2012) 1015-1026.

DOI: 10.1016/j.actamat.2011.11.016

Google Scholar

[10] M. Kulakov, W.J. Poole, M. Militzer, Recrystallization and austenite formation during continuous heating of multi-phase steel, Mater. Sci. & Tech. Conference and Exhibition, TMS, Warrendale, PA. (2010) 1316–1326.

Google Scholar