Table 8 Comparison of cooling rate and duration at different stages.

From: Exploring the actual stacking height of metal powder bed in laser powder bed fusion additive manufacturing

Location

stage

Heating

Liquid cooling

solid-liquid coexistence

Solid cooling

Reheating

Remelting

(YES/NO)

Location A

 

Point A to B

Point B to C

Point C to D

Point D to E

Point E to F

No

Duration (S)

0.000122

0.000167

0.001081

0.0048

0.00042

Cooling rate (K/S)

1.15 × 107

4.71 × 106

1.11 × 105

6.38 × 104

4.33 × 105

Location B

 

Point H to I

Point I to J

Point J to K

Point K to L

Point L to M

No

Duration (S)

0.000093

0.000005

0.000323

0.005631

0.00015

Cooling rate (K/S)

6.89 × 106

3.26 × 105

3.73 × 105

5.43 × 104

2.77 × 106