GOST R ISO 10113-2014 Metallic materials Sheet and strip Determination of plastic strain ratio《金属材料 薄板材和带材 塑性应变比的测定》.pdf

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3、, r/ - ;- 9.2 ( ) For better;- (5) (7);- 1 2 .IV 101132014 . Metallic materials. Sheets and strips.Determination of plastic strain ratio 201501011 - ( ), .2 : 6892:1998 . - (ISO 6892:1998, Metallic materials Tensile testing at ambient temperature) 9513:1999 . , (ISO 9513:1999, Metallic materials Cal

4、ibration of extensometers used in uniaxialtesting)3 :3.1 (plastic strain ratio), r: - -, r =c101c101ba,(1) c101 ;c101b .1 , , , .2 , , , - , , Ag, , r. , , . .1 101132014 r =lnlnbbLbLb000c230c232c231c231c246c248c247c247c230c232c231c231c246c248c247c247.(2) r , , r , - . , r45/20( 1).3.2 (weighted ave

5、rage plasticstrain ratio), r: r/y , r =rr r020 9020 452024/ /c43c43.(3)1 r , /-.2 , , (3).3.3 (degree of planar anisotropy), c68r: , c68r =rr r020 9020 452022/ /c43c43.(4)1 c68r, /-.2 , , (4).4 , , - 1. 1 a0 b0 L0 Le c68L c68b L /-a / b -/e () , ( )%2 101132014 1e c97 c98 () , ( -, p c97= , e c98= )

6、%r rx/y - ( ) - e/ p c97 ec98y%r rx/y)c68r c101 c101b c101l F s0 2S 2c110 m / , 100 %mr - Ag %c97, c98,x,y , 1 . - . .2 1 = 1 /2. r r .5 , , r, . , r , . ,.6 ISO6892. c1770,01 . , , c1770,005 . ( 8) , - ISO 9513:1999, 1 .3 101132014 , 1 , c1770,01 . ISO 6892.7 7.1 - , , -. , , , , ISO 6892:1998, , , 0,1 % .7.2 , .7.3 , , .8 8.1 , . . 10 35 . , , (23 c177 5) .8.2 , , , . .8.3 , , , ( 6).8.4 0,008/.8.5 , , 8.4, :) , ( );b) , ( ).8.6 L b , .8.7 6.8.8 ( 1), -, .8.9 , r-.