KS D ISO 4499-2-2009 Hardmetals－Metallographic determination of microstructure－Part 2：Measurement of WC grain size《硬质合金 显微组织的金相学测定 WC晶粒尺寸的测量》.pdf

1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS D ISO 44992 2：WC KS D ISO 44992 :2009 2009 10 6 http:/www.kats.go.krKS D ISO 44992:2009 : ( ) ( ) NFM ( ) () NS ( ) : () () : (http:/www.standard.go.kr) ： ： 2009 10 6 2009-0599 ： ： ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS D ISO 44992:2009 2：WC

2、HardmetalsMetallographic determination of microstructure Part 2：Measurement of WC grain size 2008 1 ISO 44992, HardmetalsMetallographic determination of microstructurePart 2：Measurement of WC grain size , . 1 . WC WC/Co (cermets) . . (linear-intercept technique) . 4 . ( A ) . . . . , . . . 2 KS D IS

3、O 44992:2009 2 . . ( ) . KS D ISO 3326, KS D ISO 37381, ( A)1： KS D ISO 37382, ( A)2： KS D ISO 3878, KS D ISO 4489：2001, KS D ISO 44991, 1： KS D ISO 4505, ISO 3369, Impermeable sintered metal materials and hardmetals - Determination of density 3 , , , 3.1 . (Extra coarse) (Fine) (Microfine) (Coarse)

4、 (Very fine) (Micrograin) /(Coarse/Medium) (Ultra fine) (Nanophase) (Medium ) (Extra fine) (Nanograin) /(Medium/Fine) (Submicron) (Super fine) 3.2 . (200300) , 10 % . . 10 % . 0.19 m/(Nano/Ultrafine) 0.21 m/(Ultrafine/Nano) 0.75 m/(Submicron/Fine) 0.85 m/(Fine/Submicron) 1.29 m/(Fine/Medium) 1.31 m/

5、(Medium/Fine) 2.4 m/(Medium/Coarse) 2.6 m/(Coarse/Medium) 3.2 . 3.2.1 (nano) WC 0.2 m (mean-linear-intercept method) KS D ISO 44992:2009 3 3.2.2 (ultrafine) WC (0.20.5) m 3.2.3 (submicron) WC (0.50.8) m 3.2.4 (fine) WC (0.81.3) m 3.2.5 (medium) WC (1.32.5) m 3.2.6 (coarse) WC (2.56.0) m 3.2.7 (extra

6、 coarse) WC 6.0 m 3.3 , , , . A (mm 2 ) d wcWC ( m) ECD (mm) L (mm) LI ( m) l i ( m) l i N n WC KS D ISO 44992:2009 4 m m max m min s m (mm) s a (mm) 4 WC , . KS D ISO 44991 . , . ( ) . ( 14 ) KS D ISO 44991 . Co WC. (cubic carbides) TiC Ti(C,N) . WC . WC . 2 2 , , , . . , ASTM E112 12 . (Heyn) 1) ：

7、 , . (Jefferies) . , 1) (equiaxed grains) (1) (ECD) (LI) . LI A ECD 4 / (1) ECD 1.13 LI 1 5 . KS D ISO 44992:2009 5 . . / . (multiphase) . . 5 . KS D ISO 44991, ASTM B657 10 , ASTM B665 11 . (Scanning Electron Microscopy： SEM) . SEM . SEM . . , . (ultrafine) (nano) SEM . SEM(Field Emission SEM：FE SE

8、M) . FE SEM (0.10.2) m . (Transmission Electron Microscopy：TEM) . ( 7 ). (KS D ISO 44991 ). 6 , (National Reference Standard) (stage micrometer) . SEM SIRA mm 19.7 mm 2 160 . SIRA . , ( ) . (Khler) ( 8 ). SEM , ( kV, , ) . 7 KS D ISO 44992:2009 6 7.1 WC . . . , (N) (L) . LI . LIL/N (2) , . 2 ( ) , .

9、 . WC , (l i ) ( , , , , n i1, 2, 3, , n) . 10 % 100 200 . . dwc n l / i (3) (0.110) m. , 1.0 m , 1.0 m . , 3.4 m 0.18 m . A . 7.2 7.2.1 . ( 9 ). KS D ISO 4489 4. “ ” . KS D ISO 3326 ISO 3369 (HRA) KS D ISO 37381 KS D ISO 37382 (HV) KS D ISO 3878 . KS D ISO 44992:2009 7 KS D ISO 44991 KS D ISO 4505

10、7.2.2 . a) . 4 . 200 . b) , 200 . ( 1/ N , N ). c) . 200 . (1020) WC 10 % . WC 3 4 . (anisotropy) . , ( 11 ). 50 . 7.3 7.3.1 . . . . SEM . WC . , . . , KS D ISO 44992:2009 8 . (running-average test) . . , . . 7.3.2 WC , WC . , . WC 1/3 (1020) . . ( A.4 ) , . 7.3.3 , SEM . , . , 1 . . . . . , . 1 a 2

11、30 nm b350 nm c500 nm b700 nm cSEM 20 nm b200 nm c40 nm b200 nm cFE SEM 1.5 nm b10 nm c3 nm b20 nm ca . . b c , . , 10 % 20 . (aperture) 5 m 10 % . 5 m WC , . SEM . WC . (LOM) KS D ISO 44992:2009 9 . SEM . 1 . (LOM) , 1.3 x100 (oil immersion) . 8 . , . , , ：SEM FE SEM ： ( ) . () . . SEM , , . WC 200 10 %. KS D ISO 44992:2009 10 A () WC . A.1 . . . A.1 WC/Co 1 . . SEM . A.1 (1020) . 2 . 1 . 3 2 (steel rule)( ) . 0.5 mm . . A.2 10 m, 1 81 800 m . . (A.1) .