HomeHomework HelpTextbooksTest PrepTextbook Answers
Zookal Homework Help

Homework Help

  1. Engineering
  2. Mechanical Engineering
  3. please help with this question as soon as you can...

Question: please help with this question as soon as you can...

Question details

PLEASE help with this question as soon as you can

You are required to join X70 pipeline steel to 316 austenitic stainless using stainless steel consumable (electrode Type 301 or Type 310). Use Schaeffler diagram to discuss microstructure of the weld-metal considering that there is 25% base metal dilution. The X70 pipeline steel composition is (for stainless steels compositions, use the Table in your lecture note); X70, pipeline steel composition (25 Marks) Ti 0.060 1.568 | 0.190 | 0.186 | 0.155 0.050 | 0.173 | 0.027 0.051 | 0.009 0.031 | 0.003 0.003 0.001 0.011 | <0.002 | 0.0005 0.00477 Mn Si Cu Al Mo V Nb Cr 25 Austenite 20 Austenite Austenite martensite 8-ferrite 15 10 Austenite Martensite martensite d-ferrite Martensite o-ferrite 8-ferrite 0 0 10 15 20 25 30 35 40 Chromium equivalent(%) Schaeffler diagram. Effect of alloying elements on the basic structure of Cr-Ni stainless steels (Schneider and Climax Molybdenum Co., Foundry Trade Journal 108, 562, 1960) Cr equivalent (Cr) Ni equivalent (Ni) + (Co) + 0.5(Mn) + 0.3(Cu) + 25(N) + 30(C) 2(Si) 1.5(Mo) + 5(V) + 5.5(Al)1.75(Nb)+1.5(Ti) + 0.75(W)

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution