Table 4 ANOVA results of reduced cubic model (exploitation zone is a response) for AZ61Mg alloy.

From: Surface quality and dry sliding wear behavior of AZ61Mg alloy using Abbott firestone technique

Source

Sum of squares

df

Mean square

F-value

p-value

 

Model

480.93

7

68.70

124.53

 < 0.0001

Significant

 A-Linear velocity

112.50

1

112.50

203.91

 < 0.0001

 

 B-Pressure

72.00

1

72.00

130.50

 < 0.0001

 

 AB

121.00

1

121.00

219.31

 < 0.0001

 

 A2

5.93

1

5.93

10.75

0.0220

 

 B2

136.67

1

136.67

247.71

 < 0.0001

 

 A2B

27.00

1

27.00

48.94

0.0009

 

 AB2

133.33

1

133.33

241.67

 < 0.0001

 

Residual

2.76

5

0.5517

   

 Lack of fit

2.76

1

2.76

   

 Pure error

0.0000

4

0.0000

   

Cor total

483.69

12

    

Std. dev

0.7428

R2

0.9943

Mean

82.85

Adjusted R2

0.9863

C.V. %

0.8966

Predicted R2

0.3373

  

Adeq precision

37.7562

Factor coding is coded

Sum of squares is Type III—Partial