MICROST 
SIMILAR 
M. Speicher, 
Material Testi 
ABSTRAC 
In this work 
investigated. 
microstructura 
tests were ca 
by using optic 
the PWHT c: 
respective cc 
1. INTROD 
Alloy 617 be 
power plants 
turbine and | 
limited expel 
components 
and plant eng 
in COMTES | 
were investic 
operation tin 
seams also ir 
2. EXPERII 
2.1 MATER 
The chemical 
joint and inve 
from a pipe ( 
the qirth welc 
‘Base Materi 
—_— 
Weld Metal