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    ASTM E1268-18

    Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures
    • 발행일 : 2018-06-01
    • 발행기관 : ASTM
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분야 03.01 : 금속-기계적 시험;가열 및 저온시험;금속 조직학
적용범위

1.1 This practice describes a procedure to qualitatively describe the nature of banded or oriented microstructures based on the morphological appearance of the microstructure.

1.2 This practice describes stereological procedures for quantitative measurement of the degree of microstructural banding or orientation.

Note 1: Although stereological measurement methods are used to assess the degree of banding or alignment, the measurements are only made on planes parallel to the deformation direction (that is, a longitudinal plane) and the three-dimensional characteristics of the banding or alignment are not evaluated.

1.3 This practice describes a microindentation hardness test procedure for assessing the magnitude of the hardness differences present in banded heat-treated steels. For fully martensitic carbon and alloy steels (0.10–0.65 %C), in the as-quenched condition, the carbon content of the matrix and segregate may be estimated from the microindentation hardness values.

1.4 This standard does not cover chemical analytical methods for evaluating banded structures.

1.5 This practice deals only with the recommended test methods and nothing in it should be construed as defining or establishing limits of acceptability.

1.6 The measured values are stated in SI units, which are regarded as standard. Equivalent inch-pound values, when listed, are in parentheses and may be approximate.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
국제분류(ICS)코드 07.030 : 물리학. 화학
페이지수 28
Edition 18

이력정보

No. 표준번호 표준명 발행일 상태
1 ASTM E1268-19상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2019-06-01 표준
2 ASTM E1268-19 REDLINE상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2019-06-01 표준
3 ASTM E1268-18상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2018-06-01 구판
4 ASTM E1268-01(2016)상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2016-01-01 구판
5 ASTM E1268-01(2007)상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2007-05-01 구판
6 ASTM E1268-99상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2001-12-10 구판
7 ASTM E1268-01상세보기 Standard Practice for Assessing the Degree of Banding or Orientation of Microstructures 2001-12-10 구판

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