Research Article

Study on Coercivity-Stress Relationship of X80 Steel under Biaxial Stress

Table 1

Hc  σy fitting formula under different of test piece 1.

(MPa)

 = 0 = 0.53 + 1608.6 = −0.67 + 1624.1
 = 120 = 0.74 + 1495.8 = −0.77 + 1680.8
 = 240 = 0.57 + 1469.1 = −0.73 + 1721.6