Martensitic steels microstructural changes

Welding carbon and low-alloy steels can create residual stress and cause undesirable microstructure changes, e.g., formation of martensite, both of which make steel more vulnerable to hydrogen embrittlement. - - Both the fusion zone and heat-affected zone regions of the weld can have microstructures that vary from the base metal. 

Summarizing, the martensitic 10% Cr-steel showed good mechanical properties as wrapper material, especially in the regions of high doses. The mechanical properties and the fracture behavior will be discussed by the microstructural changes. 

Microstructural changes during the strain of martensitic steels at low loads... 

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