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

Figure 15

Fracture path (a) and creep cavities in WM (b) and nonruptured necked FZ (c) of CB2 weldment ruptured in WM by “type I failure” after the creep test at 625°C, 120 MPa.

(a)

(b)

(c)