National University of Ireland Galway. Dr Noel Harrison

Transcription

1 National University of Ireland Galway Dr Noel Harrison ASFC- IOM3 Meeting 28 th October 2015

2 Overview NUI Galway METCAM project MECHANNICS project University of Limerick & NUI Galway Related research areas

3 National University of Ireland, Galway Established in ,000 students and 2,500 staff Top-ranked Irish university outside Dublin Biomedical Science, Informatics, Environment & Energy, Humanities

4 METCAM Follows from UL - NUI Galway - ESB - U Nottingham collaboration: METCAM: Multiscale, Thermomechanical Characterisation of Advanced, high temperature Materials for power generation Focused on ex-service P91 and MARBN Four year project, finished August 2015

5 Key outputs from METCAM 1. High Temperature Mechanical Characterisation of PM, WM, HAZ of P91 and MARBN 2. Macro-meso-micro scale models to predict HT deformation and LCF life 3. Multiaxial life assessment of power plant components

6 Key outputs from METCAM-1 High Temperature Mechanical Characterisation of PM, WM, HAZ of P91 and MARBN HT-LCF test programme on PM, WM, CW ex-service P91 weld repair Temperature effect and strain rate effect

7 Key outputs from METCAM-2 Macro-meso-micro scale models for HT deformation and LCF life 600 C Validation of MarBN Material Parameters at 600 C

8 Key outputs from METCAM 2 Macro-meso-micro scale models for P91 to predict HT deformation and LCF life 5 cm 300 mm Crystal plasticity model

9 Key outputs from METCAM 2 Macro-meso-micro scale models for P91 to predict HT deformation and LCF life One-to-one validation EBSD measurements and crystal plasticity FE EBSD imaging- University of Limerick

10 Key outputs from METCAM-2 Macro-meso-micro scale models for P91 to predict HT deformation and LCF life Influence of microstructure (precipitate size) on crack initiation

11 Key outputs from METCAM-3 Life assessment of power plant components

12 Key outputs from METCAM-3 Multiaxial life assessment of power plant components von Mises (MPa) Radial (MPa) Hoop (MPa) Axial (MPa) Weld toe; Saddle Weld toe; Crotch Inner bore; Saddle Inner bore; Crotch Region Location N f (cycles) N f (years*) Weld toe Saddle Crotch Bore Saddle Crotch *Based on one start-up cycle per week

13 MECHANNICS Multi-scale through-process characterisation for innovative manufacture of nextgeneration welded connections

14 Motivation MECHANNICS- Context Process-structure-property microstructure-based design Dramatic challenges for industry vis-à-vis sustainability Flexible and aggressive loading conditions Research approach Multiscale, through-process characterisation of welded connections of ferritic/martensitic steels New capability Next generation, model-informed manufacturing and assessment of welded connections 14

15 Multi Material Welded Connections Material Specific (microstructure & micromechanics) 1) Weld metal 2) Heat affected zone Coarse grain Fine grain Intercritical zone 3) Parent metal 15

16 Multiscale Approach Precipitate (M 23 C 6 ) Macroscale m

17 Multiscale Mechanics 0.5 mm Dongfeng Li et al, Submitted: Int J Plasticity

18 Coupling: Evolution & Deformation Through-process microstructural evolution during heat treatment Orientation angle VMS Stress G. Abrivard et al, Philosophical Magazine,

19 Application Focus Areas Power Generation Offshore Engineering Partners Materials Environment Challenge MarBN, P91, E911 High temperature (inc USC) Flexible operation mode Fire/steam side corrosion Creep and HT Low Cycle Fatigue X100 Dynamic loading Sea water corrosion Oil corrosion Low & High Cycle Fatigue 19

20 MECHANNICS Work Programme WP7 Design Software & Case studies WP1 Microstructure Evolution Modelling WP2 Multiscale Damage Modelling WP6 Macroscale Experimental Testing WP5 Microscale Experimental Testing Industrial Applications: Power Gen (USC & TMF) Offshore (SCR) WP4 Process Measurements: Welding & Heat Treatment WP3 Process Modelling: Welding & Heat Treatment 20

21 Related Research Areas Additive Manufacturing ( 3D Printing ) Process 3D Grain Growth Phase Field Modelling COMBINED Microstructure Mechanics Crystal Plasticity Theory Process Parameters Grain Structure Mechanical Performance H Rolled Li et al, Acta Materialia 61, 2013) Ti6Al4v AM Antonysamy et al. Materials characterisation 84 (2013) EBSD- Crystal grain misorientation

22 Thank you 22