چکیده مقاله
In this study, the cause of brittle fracture at the main weld line of a spherical pressure vessel made of Ti 6Al 4V alloy has been investigated To fabrication of pressure vessel, two hemispheres of Ti 6Al 4V alloys welded together by gas tungsten arc welding Due to sensitivity of titanium welding to oxygen, nitrogen, hydrogen, and carbon elements, and solving of the elements as interstitial, the fusion zone, solid zone which hot till 500°C, must be protected with high purity argon gas from these elements Insufficient protection and higher heat input, resulted in formed brittle compounds in the fusion zone In further studies, the cause of the failure of the welding region has been determined that the outer layer of the fusion zone is oxidized due to inadequate protection At high pressures inside the vessel, this oxide layer is cracked due to its brittleness and then the crack is grown at αcase with high speed and entered into a welded area
کلیدواژهها
نویسندگان
Y Vahidshad
Assistance Professor, Space Transportation Research Institute, Iranian Space Research Center,
A. H. Khodabakhshi
Researcher, Space Transportation Research Institute, Iranian Space Research Center
A.S Soleymani
Researcher, Space Transportation Research Institute, Iranian Space Research Center,
شیوه ارجاع
Vahidshad, Y and Khodabakhshi, A. H. and Soleymani, A.S,1400,An Investigation of Welding Brittle Fracture of Titanium Spherical Tank Fabricated by TIG,4th International Conference on Welding and Non Destructive Testing & 22nd National Conference on Welding & Inspection & 11th National Conference on NDT,Isfahan
ارائهشده در
مجموعه مقالات چهارمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب و بیست و دومین کنفرانس ملی جوش و بازرسی و یازدهمین کنفرانس ملی آزمایش های غیرمخرب18 اسفند 1400 · اصفهان