After the double end stud of specification of M6×30 mm made of TC4 titanium alloy is normally fitted on the aircraft,it fails and gets fracture during high-temperature mechanic test.It is concluded that failed and fractured stud is in the form of overload resilience fracture and the cause of failure is because of actual load borne by the stud beyond the originally designed requirement by means of analysis on chemical composition of failed stud,analysis on fracture cross-section with scanning electron microscope,metallographic inspection,re-inspection of raw materials as well as mechanical property testing on the studs of the same batch in stock.
维普
万方数据