Publications under way


Cemented carbides and cermets
A comparison of the microstructures of WC-VC-TiC-Co and WC-VC-Co cemented carbides
NG Hashe, JH Neethling, H-O Andrén, S Norgren and PR Berndt
Int. J. Refr. Met. & Hard Mater., in press

Steel weld metal
Coalesced Bainite
HKDH Bhadeshia, E Keehan, L Karlsson and H-O Andrén
Trans. Indian Inst. Metals, accepted for publication





Publications 2006

Austenitic stainless steels

The evolution of primary and secondary niobium carbonitrides in AISI 347 stainless steel during manufacturing and long-tern ageing
J Erneman, M Schwind, H-O Andrén, J-O Nilsson, A Wilson and J Ågren
Acta Mater. 54 (2006) 67-76

Ferritic steels
Atom probe field ion microscope measurements of carbon segregation at an α: α grain boundary and service failures by intergranular stress corrosion cracking
A Atrens, JQ Wang, K Stiller and HO Andren
Corrosion Science 48 (2006) 79-92


9-12% chromium steels
An EFTEM study on Z-phase nucleation in martensitic chromium steels
A Golpayegani and H-O Andrén
In “Materials for Advanced Power Engineering 2006”, Eds. J Lecomte- Beckers, M Carton, F Schubert and PJ Ennis. Schriften der Forschungs- zentrum Jülich GmbH (2006), Reihe Energitechnik, Band 53 Part III pp 1267-1274


Cemented carbides and cermets
Mechanisms of plastic deformation of WC-Co and Ti(C,N)-WC-Co
G Östberg, K Buss, M Christensen, S Norgren, H-O Andrén, D Mari, G Wahnström and I Reineck
Int. J. Refr. Met. & Hard Mater. 24 (2006) 135-144.

Effect of TaC on plastic deformation of WC-Co and Ti(C, N)-WC-Co
G Östberg, K Buss, M Christensen, S Norgren, H-O Andrén, D Mari, G Wahnström and I Reineck
Int. J. Refr. Met. & Hard Mater. 24 (2006) 145-154

Effect of Σ2 grain boundaries on plastic deformation of WC-Co cemented carbides
G. Östberg, M. U. Farooq, M. Christensen , H.-O. Andrén, U. Klement and G. Wahnström
Mater. Sci. Eng. A416 (2006) 119-125

On spinodal decomposition in the Co-W system
G Östberg, Bo Jansson and H-O Andrén
Scripta Mater. 54 (2006) 595-598

Microstructural changes during wear by plastic deformation of cemented carbide and cermet cutting inserts
G Östberg and H-O Andrén
Metall. Mater. Trans. 37A (2006) 1495-1506

Steel weld metal
Influence of carbon, manganese and nickel contents on microstructrue and properties of strong steel weld metals. Part 1 - Effect of nickel content
E Keehan, L Karlsson and H-O Andrén
Sci. Techn. Welding & Joining 11 (2006) 1-8

Influence of carbon, manganese and nickel contents on microstructrue and properties of strong steel weld metals. Part 2 - Impact toughness gain from manganese reductions
E Keehan, L Karlsson, H-O Andrén and H K D H Bhadeshia
Sci. Techn. Welding & Joining 11 (2006) 9-18

Influence of carbon, manganese and nickel contents on microstructrue and properties of strong steel weld metals. Part 3 - Increased strength from carbon additions
E Keehan, L Karlsson, H-O Andrén and H K D H Bhadeshia
Sci. Techn. Welding & Joining 11 (2006) 19-24

New developments with C-Mn-Ni high strength steel weld metals, Part A — Microstructure
E Keehan, L Karlsson, H-O Andrén and H K D H Bhadeshia
Welding Journal 85(9) (2006) 200s-210s

New developments with C-Mn-Ni high strength steel weld metals — Part B, Mechanical properties
E Keehan, L Karlsson, H-O Andrén and L-E Svensson
Welding Journal 85(10) (2006) 218s-224s


Publications 2005

Austenitic stainless steels

Comparison between quantitative metallography and modelling of sigma-phase particle growth in AISI 347 stainless steel
J Erneman, M Schwind, L Nylöf, J-O Nilsson, H-O Andrén and J Ågren
Metall. Mater. Trans. A, 36 (2005) 2595-2600

9-12% chromium steels
Mechanism for beneficial effect of boron addition on creep resistance of 9-12% chromium steels
A Golpayegani and H-O Andrén
In "Solid-to-Solid Phase Transformations in Inorganic Materials 2005", Eds. JM Howe, LE Laughlin, JK Lee, U Dahmen and WK Soffa, TMS, Warrendale PA (2005) Vol. 1 pp. 461-466

Cemented carbides and cermets
Microstructural changes during wear by plastic deformation of cemented carbide and cermet cutting inserts
G Östberg, H-O Andrén and S Norgren
Proc. 16th Plansee Seminar, Ed. G Kneringer, P Rödhammer and H Wildner, Plansee Holding AG, Reutte, Tyrol, Austria, 2005, Vol. 2 pp. 1141–1157

Steel weld metal
Understanding mechanical properties of novel high strength weld metals through high-resolution microstructural investigations
E Keehan, L Karlsson, H-O Andrén and HKDH Bhadeshia
Trends in Welding Research 2005, Proc. 7th Int. Conf., ASM International, Materials Park, OH

Publications 2004 

Instruments and methods
Quantitative metallography of sigma phase precipitates in AISI 347 stainless steel - a comparison between different methods
J Erneman, L Nylöf, J-O Nilsson and H-O Andrén
Mater. Sci. Techn. 20 (2004) 1245-1251

Austenitic stainless steels
Precipitation reactions caused by nitrogen uptake during service at high temperatures of a niobium stabilised austenitic stainless steel
J Erneman, M Schwind, P Liu, J-O Nilsson, H-O Andrén and J Ågren 
Acta Materialia 52 (2004) 4337-4350

Martensitic steels
Conventional and tomographic atom probe investigations of secondary- hardening carbides
H Leitner, K Stiller, H-O Andrén and F Danoix
Surf. Interface Anal. 36 (2004) 540-545

Steel weld metal
Development of high strength steel weld metals—potential of novel high-Ni compositions
L Karlsson, E Keehan, H-O Andrén and H K D H Bhadeshia
Proc. Eurojoin 5, Vienna (2004)

High strength steel weld metals—potential of novel high-nickel composition
L Karlsson, E Keehan, H-O Andrén and D Widgery
12th Int Symp. “Metallography 2004”, Slovakia (2004)
 

Publications 2003

Instruments and methods
Use of atom probe techniques to support thermodynamic and atomistic modelling of phase 
transformations
H-O Andrén
Mater. Sci. Eng. A353 (2003) 62-67

9-12% chromium steels
Effect of boron and copper on precipitate growth and coarsening in martensitic chromium steels
A Golpayegani, M Hättestrand and H-O Andrén
In “Parsons 2003, Engineering Issues in Turbine Machinery, Power Plant and Renewables”, Proc. 6th Int. Charles Parsons Turbine Conf., Eds. A Strang, RD Conroy, WM Banks, M Blackler, J Leggett, GM McColvin, S Simpson, M Smith, F Starr and RW Vanstone. Manley Publishing, London (2003) pp 347-363.

Cemented carbides and cermets
A new labyrinth factor for modelling the effect of binder volume fraction on gradient sintering of cemented carbides
R Frykholm, M Ekroth, B Jansson, J Ågren and H-O Andrén 
Acta Materialia 51 (2003) 1115-1121

Steel weld metal
Microstructural and mechanical effects of nickel and manganese on high strength weld metals
E Keehan, H-O Andrén, L Karlsson, M Murugananth and HKDH Bhadeshia
Trends in Welding Research, Proc. 6th Int. Conf., Eds. SA David, T DebRoy, JC Lippold, HB Smartt and JM Vitek. ASM International, Materials Park, OH 2003, pp. 695-700
 
 

Publications 2002

Instruments and methods
Methods for atom probe analysis of microgradients in functionally graded cemented carbides
R Frykholm, B Jansson and H-O Andrén
Micron 33 (2002) 639-646

Cemented carbides and cermets
The influence of carbon on formation of carbo-nitride free surface layers in cemented carbides
R Frykholm, B Jansson and H-O Andrén
Int J Refr Met & Hard Mater 20 (2002) 345-353

Effect of grain boundary geometry on plastic deformation in WC-Co
G Östberg, H-O Andrén, M Christensen, G Wahnström, M U Farooq, U Klement and I Reineck
Proc. Euro PM 2002. EPMA, Shrewsbury (2002) pp. 85-90

Steel weld metal
Strong and tough steel welds
M Murugananth, HKDH Bhadeshia, E Keehan, H-O Andrén and L Karlsson
Mathematical modelling of weld phenomena 6, Ed. H Cerjak. Manley Publishing, London 2002, pp. 
 205-229
 

Publications 2001

Instruments and methods
Combining TEM and APFIM techniques to study the microstructure of steels and hardmetals
H-O Andrén
Micron 32 (2001) 713-719

9-12% chromium steels
Evaluation of particle size distributions of precipitates in a 9% Cr-steel using energy filtered transmission electron microscopy
M Hättestrand and H-O Andrén
Micron 32 (2001) 789-797

Influence of strain on precipitation reactions during creep of an advanced 9% chromium steel
M Hättestrand and H-O Andrén
Acta Mater. 49 (2001) 2123-2128

Quantitative evaluation of particle size distributions of different phases in steel P92 exposed at 600°C and 650°C using EFTEM
M Hättestrand and H-O Andrén
"Quantitative microscopy of high temperature materials", Eds. A Strang and J Cawley. Book 
732, IOM Communications, London (2001) pp. 331-344

Microstructural development during ageing of an 11% chromium steel alloyed with copper
M Hättestrand and H-O Andrén
Mater. Sci. Eng. A318 (2001) 94-101

Cemented carbides and cermets
Microstructures of cemented carbides
H-O Andrén
Materials & Design 22 (2001) 491-498

Microstructure of the Ni binder phase in a TiC-Mo2C-Ni cermet material
J Zackrisson, A Larsson and H-O Andrén
Micron 32 (2001) 707-712

Development of cermet microstructures during sintering
J Zackrisson, U Rolander and H-O Andrén
Metall. Mater. Trans. A 32 (2001) 85-94 

Microstructure development during sintering and heat-treatment of cemented carbides and cermets
H-O Andrén
Mater Chem Phys 67 (2001) 209-213

Development of microstructure during gradient sintering of a cemented carbide
R Frykholm and H-O Andrén
Mater Chem Phys 67 (2001) 203-208

Effect of pre-alloyed raw materials on the microstructure of a (Ti,W)(C,N)-Co cermet
P Lindahl, A E Rosén, P Gustafson, U Rolander and H-O Andrén
Int. J. Refractory Met. Hard Mater. 18 (2001) 273-279

Effect of cubic phase composition on gradient zone formation in cemented carbides
R Frykholm, M Ekroth, B Jansson, H-O Andrén and J Ågren
Int J Refr Met & Hard Mater 19 (2001) 527-538

The effect of binder volume fraction on gradient sintering of cemented carbides
R Frykholm, M Ekroth, B Jansson, J Ågren and H-O Andrén 
Proc. 15th Int Plansee Seminar, Eds. G Kneringer, P Rödhammer and H Wildner, Plansee Holding AG, Reutte, Tyrol, Austria (2001) Vol. 4 pp 337-350

Steel weld metal
High strength steel weld metals—developments with Ni and Mn
E Keehan, L Karlsson, M Murugananth, H-O Andrén and H Bhadeshia
Proc. 7th Int Welding Symp, Ed. T Ohji, Japan Welding Society, 2001, Vol. 2 pp. 797-802
 
 

Publications 2000

Review
APFIM Studies of Grain and Phase Boundaries: A Review
M Thuvander and H-O Andrén
Mater. Characterization 44 (2000) 87-100

Austenitic stainless steels
Sigma-phase precipitation in stabilized austenitic stainless steels
M Schwind, J Källqvist, J-O Nilsson, J Ågren and H-O Andrén
Acta Mater. 48 (2000) 2473-2481.

Development of precipitate size and volume fraction of niobium carbonitrides in stabilised stainless steel
J Källqvist and H-O Andrén
Mater. Sci. Techn. 16 (2000) 1181-1185

9-12% chromium steels
Redistribution of elements during ageing and creep testing of 9-12% chromium steels
L M Lundin, M Hättestrand and H-O Andrén 
in "Parsons 2000, Advanced Materials for 21st Century Turbines and Power Plant", Proc. 5th Int. Charles Parsons Turbine Conf., Eds. A Strang, WM Banks, RD Conroy, GM McColvin, JC Neal and S Simpson, Book 736, IOM Communications, London (2000) pp 603-617
(Awarded the prize for best paper on steam turbine materials)

Cemented carbides and cermets
Microstructure and performance of a cermet material heat-treated in nitrogen
J Zackrisson, U Rolander, B Jansson and H-O Andrén
Acta Mater. 48 (2000) 4281-4291

Gradient zones in WC-Ti(C, N)-Co based cemented carbides: experimental study and computer simulations
M Ekroth, R Frykholm, M Lindholm, H-O Andrén and J Ågren
Acta Mater. 48 (2000) 2177-2185 
 
 

Publications 1999

Austenitic stainless steels
Microanalysis of a stabilised austenitic stainless steel after long term ageing
J Källqvist and H-O Andrén
Mater. Sci. Eng. A270 (1999) 27-32
 

9-12% chromium steels
Microanalysis of 9-12% chromium steels P92 and P122
M Hättestrand, M Schwind and H-O Andrén
in "Advanced heat resistant steels for power generation", Conf. Proc. San Sebastián, Spain 27-29 April 1998, Eds. R Viswanathan and J Nutting. London: IOM Communications Ltd (1999), Book 708, pp 199-211

Boron distribution in 9-12% chromium steels
M Hättestrand, H-O Andrén, L Lundin and M Schwind
Mater. Sci. Eng A270 (1999) 33-37

Cemented carbides and cermets
A comparison between quantitative EELS and APFIM microanalysis of carbonitride grains in cermets
J Zackrisson, W Grogger, F Hofer and H-O Andrén
Ultramicroscopy 79 (1999) 273-281

Methods for atom probe study of near surface zones in cemented carbides
R Frykholm and H-O Andrén
Ultramicroscopy 79 (1999) 283-286

Microstructure of model cermets with high Mo or W content
P Lindahl, P Gustafson, U Rolander, L Stals and H-O Andrén
Int. J. Refr. Met. & Hard Mater. 17 (1999) 411-421

Effect of carbon content on the microstructure and mechanical properties of (Ti, W, Ta, Mo)(C, N)-(Co, Ni) cermets
J Zackrisson and H-O Andrén
Int. J. Refr. Met. & Hard Mater. 17 (1999) 265-273
 
 


updated November 30, 2006
andren@chalmers.se