Ageing Effects on Microstructure, Mechanical Properties, and Fracture Behaviour of 9Cr-1.5Mo-1Co-VNbBN Martensitic Steel Welded Joint for High Temperature Application

Figure 11

Longitudinal sections of creep specimens counterparts indicating the following: “type I failure” in WM after creep test of CB2 welded joint at 625°C/120 MPa (a), “type III failure” in FZ after creep test at 625°C/100 MPa (b), “type III failure” in FZ after creep test at 625°C/80 MPa (c), and failure in CB2 BM of weld-free specimen after creep test at 625°C/120 MPa (d).

(a)

(b)

(c)

(d)