Performance and Reliability of Metallic Materials for Nuclear Fission Power Generation

Lead Research Organisation: Imperial College London
Department Name: Materials


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Description A systematic study of many of the important microstructural features associated with SCC as a result of the introduction of cold work were examined and as a result several proposed theories were rejected. The idea that martensite induced by plastic strain was a cause of the decreased SCC resistance was not found and no link could be made due to occurrence of "special" CSL grain boundaries. The big increase in SCC was observed for a narrow window of cold work of 0.5-2%. More than this and the cold work showed a protective nature with no cracks observed at 20% cold work or greater. It was proposed this was due to heterogeneous plasticity effects at low levels of cold work generating micro-level residual stresses
Exploitation Route Research being taken forward by second PhD. We will use EBSD to look for microlevel stresses to test our theory. We will study the effect of weld residual stresses on SCC and the effects of salt level needed for SCC.
Sectors Energy

Description As above the results will be reviewed by EDF Energy as part of their safety case proposal for the dry storeat Sizewell and a second paper to be published for which we are collecting additional data on the effects of salt loading on SCC could potentially have a big impact on the safety case.
First Year Of Impact 2016
Sector Aerospace, Defence and Marine,Energy,Government, Democracy and Justice
Impact Types Economic

Description Award to extend GG Scatigno's PhD funding period to study the effect of atmospheric SCC on the 316L material that the dry store containers are made from.
Amount £20,000 (GBP)
Organisation EDF Energy 
Sector Private
Country United Kingdom
Start 06/2015 
End 12/2016
Description Rolls-Royce plc 
Organisation Rolls Royce Group Plc
Country United Kingdom 
Sector Private 
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