Liquid Metal Embrittlement | Materials And Corrosion Control - PDFYAR

A form of cracking resulting when certain molten metal come in contact with specific alloys.

Liquid Metal Embrittlement | Materials And Corrosion Control

Damage Mechanism	Liquid Metal Embrittlement
Damage Description	· A form of cracking resulting when certain molten metal come in contact with specific alloys. · Cracking can be very sudden and brittle in nature. · Damage resulting from LME will appear as brittle cracks in an otherwise ductile material
Affected Materials	Most common materials of construction including carbon steel, low alloy steel, high strength steel, 300 series SS, nickel and copper bases alloys.
Control Methodology	· Protect metal substrate from coming into contact with a low melting metal
Monitoring Techniques	· MT examination for ferritic steel and PT examination for 300 series and nickel base alloys · RT can be used to detect deposits inside heat exchanger tubes if Mercury is expected to be present
Inspection Frequency	· UT, RT and visual inspection at T&I
KPIs	· NDT Inspection: Absence of cracking
Reference Resources (Standards/GIs/BPs)	· API RP 571 (DM #52) · ASM Metals Handbook