b'Mechanical Testing of FeCrAl TubingPrincipal Investigator: Stuart A. MaloyTeam Members/ Collaborators: Mathew L. Hayne and Carl M. CadyTensile properties were measured on C26M tubing providing engineering stress/strain curves from room temperature to 600C.B ecause of the events related todata on mechanical properties at room the Fukushima reactor incident,temperature and elevated temperature. innovative new cladding mate- The optimal alloy being produced in rials are being investigated for lighttube form is C26M. In this research, water reactors (LWRs) with improvedspecimens were cut directly from resistance to accident conditions suchC26M tubing and tested in tension at as a Loss of Coolant Accident (LOCA).room temperature, 300 and 600C.Materials need to be developed andAccomplishments:tested to meet these challenging condi- The axial tensile properties of C26M tions. One possible candidate materialtube were successful measured at Los for cladding applications is a FeCrAlAlamos National Laboratory (LANL). alloy. Advanced FeCrAl alloys have beenTest were conducted at a constant developed at Oak Ridge National Labo- strain rate of 10-3 s-1 and three ratory (ORNL). These alloys need to bedifferent temperatures (22, 300, qualified through mechanical testing atand 600C). Tensile samples were relevant temperatures. machined from C26M tubes using Project Description: wire electric discharge machining, To move toward qualification ofwith the nominal specimen geometry FeCrAl alloys for Accident Tolerant Fuelis shown in Figure 1. The sample (ATF) cladding multiple tests need togeometry measurements and tensile be performed on the optimal FeCrAltesting were conducted following a alloys in tube form to obtain statisticalsimilar procedure outlined in a previous 70 2020|AFC ACCOMPLISHMENTS'