Table 1 Comparison of experimental and calculated activity coefficients for Al-Mg alloy components at 1000 K.

1.0

0.0

1.000

0.737

1.0000

0.6512

1.0000

0.6587

1.0000

0.6796

0.9

0.1

1.001

0.714

0.9938

0.7355

0.9943

0.7362

0.9952

0.7465

0.8

0.2

0.994

0.741

0.9782

0.8053

0.9794

0.8027

0.9820

0.8055

0.7

0.3

0.969

0.797

0.9566

0.8615

0.9581

0.8579

0.9624

0.8560

0.6

0.4

0.927

0.866

0.9314

0.9056

0.9325

0.9022

0.9379

0.8980

0.5

0.5

0.872

0.932

0.9042

0.9392

0.9045

0.9366

0.9099

0.9320

0.4

0.6

0.817

0.984

0.8761

0.9639

0.8753

0.9623

0.8796

0.9583

0.3

0.7

0.776

1.012

0.8478

0.9812

0.8458

0.9803

0.8477

0.9776

0.2

0.8

0.767

1.017

0.8199

0.9922

0.8166

0.9919

0.8151

0.9905

0.1

0.9

0.813

1.008

0.7927

0.9982

0.7883

0.9981

0.7823

0.9977

0.0

1.0

0.961

1.000

0.7664

1.0000

0.7610

1.0000

0.7498

1.0000

Average standard error, ±S

0.01235

0.01329

0.01203

0.01316

0.01254

0.01368

Average relative error, ±S_i (%)

12.1366

12.2334

12.1016

12.1359

12.2577

12.2664