Failure analysis of austenitic stainless steel pipes in amine liquid regeneration unit of a desulfurizer

Tube and shell condenser is an important component of soybean softening equipment, and its structure is Q235B welding with 304 austenitic stainless steel pipes. During the using process of this product, it appears crack failure .In order to find the reason of crack failure, the welded joint was analyzed by SED, XRD, EDXRF and metallographic microscope in detail, and some improvement measures and solutions are put forward to avoid crack failure in this paper.

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Failure analysis of austenitic stainless steel tubes in a gas fired steam heater

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2011.12.027 ◽

2012 ◽

Vol 36 ◽

pp. 788-795 ◽

Cited By ~ 18

Author(s):

Navid Parnian

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Failure Analysis ◽

Steel Tubes ◽

Steam Heater

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Failure analysis of service exposed austenitic stainless steel pipelines

Engineering Failure Analysis ◽

10.1016/j.engfailanal.2019.104337 ◽

2020 ◽

Vol 108 ◽

pp. 104337 ◽

Cited By ~ 3

Author(s):

N. Sreevidya ◽

S. Abhijith ◽

Shaju K. Albert ◽

V. Vinod ◽

Indranil Banerjee

Keyword(s):

Stainless Steel ◽

Austenitic Stainless Steel ◽

Failure Analysis

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Characterization of Dissimilar Welded Joints Between Austenitic and Duplex Stainless Steel Grades for Liquid Tank Applications

Volume 6A: Materials and Fabrication ◽

10.1115/pvp2018-84997 ◽

2018 ◽

Author(s):

G. Ubertalli ◽

M. Ferraris ◽

P. Matteis ◽

D. Di Saverio

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Austenitic Stainless Steel ◽

Stainless Steels ◽

Welded Joints ◽

Industrial Applications ◽

Duplex Stainless Steels ◽

Steel Pipes ◽

Steel Grades ◽

Welding Processes

Lean duplex stainless steels have similar corrosion and better mechanical properties than the austenitic grades, which ensure their extensive spreading in industrial applications as a substitute of austenitic grades. In the construction of liquid tanks, however, it is often necessary to weld such steels with a range of fittings which are commonly fabricated with austenitic stainless steel grades. Therefore, this paper examines dissimilar welded joints between LDX 2101 (or X2CrMnNiN22-5-2) lean duplex stainless steels plates and austenitic stainless steel pipes, carried out by different arc welding processes. The investigation focuses on the correlation between the welding procedures and the microstructural and mechanical properties of the welded joints.

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