A Review on Melt-Pool Characteristics in Laser Welding of Metals

Table 1

Influence of two laser welding parameters on various melt-pool geometry parameters.

Geometry parameter	Process parameter
	Laser power	Welding speed
Melt-pool depth	+^a	−^b
Melt-pool width	+^c	−^d
Melt-pool depth/width ratio	NS	+^e
Melt-pool length	+^f	−^g
Keyhole radius	+^g	−^g
Cooling rate	−^h	+^i
Melt-pool surface area	+^j	−^k
Vaporization rate	+^l	NS

⁺Direct relationship; ⁻inverse relationship; NS: not stated in the report; ^a[11, 30–37]; ^b[11, 31, 33, 38–41]; ^c[11, 33–37, 42–44]; ^d[11, 12, 31, 33, 38, 41, 42, 45]; ^e[30]; ^f[32, 42]; ^g[42, 45]; ^h[7, 8]; ⁱ[8]; ^j[43, 46]; ^k[38, 41, 47]; ^l[44, 46].