TRL	TiC-reinforced composite surface layer
LA	Laser surface alloying
DCI	Ductile cast iron
MMC	Metal matrix composite
SM	Substrate material
SAB	Single-alloyed bead
SAL	Surface alloyed layer (the layer produced via a multi-pass overlapping alloying process)
TRC	SAL produced using a powder mixture of Ti-Cr
TRM	SAL produced using a powder mixture of Ti-Mo
TR	SAL produced using a pure Ti powder
HAZ	Heat-affected zone
MFP	Mean free path
BSE	Back-Scattered Electron