GOST R 54570-2011 Steels Assessing the degree of banding or orientation of microstructures《钢 分层程度或微观结构定位的评估》.pdf

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1、 54570 20112012 545702011 27 2002 . 184- , 1.0 2004 . 1 145 2 - 30 2011 . 657-3 ASTM 126801 (ASTM126801 Assessing the degree of banding or orientation of microstructures) - , 1.72008. 4 - , . () - . -, , 2012 , - - IIIII112456691011122931321 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、. . . . . . . . . .2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . . . . . . . . . . .6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 . . . . . . . . . . . .

4、. . . . . . . . . . . . . . . . . . . . . . . . . . . .10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 () - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 () HK HRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5、 . . . . . . () - . . . . . . . . . . . . . . . . . . . . . . . () , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5457020111 1 Steel. Assessing the degree of bandingor orientation of microstructures 2012 09 011 , . , . - - . . - - , () . , . , , , , , . , - ., , - , , , - .2 : 945076 14

6、001 (ASTM E 14001, HardnessConversion Tables for Metal) 37003 - (ASTM A 37003, Test Methods and Definitions for Mechanical Testing of Steel Products) 38401 (ASTM E 38401, Test Method forMicrohardness of Materials) E 56202 (ASTM E 56202,Determining Volume Fraction by Systematic Manual Point Count) 54

7、5702011 2 5457020113 , 3.1 3.1.1 (banded microstructure): , - , , . - , , - , , .3.1.2 (feature interceptions): ( ) - , ( 1). 1 , () - (). N, N|, P | , () ().2 , , ; , . 1 N 3.1.3 (feature interseptions): - , (. 1). , , .3.1.4 (oriented constituents): - ( ), (. . ); - .3.1.5 c (stereological methods

8、): , - , - .3 1 -, , (. . ), .2 .1 , , - . 2 - .3.2 N , -.N| , .M .Lt , . . , .NL= NLt.NL|= NLt|.P , -.P| , .PL= PLth 2NL.PL|= PLt|h 2NL|.N .NLLNn=.NLLNn|.=PLLPn=h 2NL. 2 5457020114PLLPn|=h 2NL|.Xc ( NNPPLLLL,| |).S ().t , 95 % CI.95 % CI 95 %- .95 % CI = tsn.% RA , %.% R = 95100%X .SB .SB = 1NL .V

9、( ). , (). = 1 VNL.I .AI = NNPPLLLL=| |.12 .12= NNLL+|,0 571.12= PPLL+|,0 571.4 4.1 4.1.1 . , 50 200.4.1.2 , , . - 2. .1 , , .4.2 4.2.1 , ( NL, NL|, I, 12, SB, .). 54570201154.2.2 - .4.2.3 , . . .4.2.4 , , , -. - . 500 . .1.4.2.5 - .4.3 4.3.1 , .4.3.2 - . .4.3.3 (0,10 % 0,65 % ) .5 5.1 , - , , . , . , , , ( , 1/4 ) , .5.2 ,. .