ISO 13947-2007 金属粉末.用铸造粉末样品测定金属粉末中非金属夹杂物的试验方法.pdf

标准号：ISO 13947-2007
实施状态：作废
中文名称：金属粉末.用铸造粉末样品测定金属粉末中非金属夹杂物的试验方法
英文名称：Metallic powders - Test method for the determination of non-metallic inclusions in metal powders using a powder-forged specimen
发布日期：2007-02
被替代标准：ISO 13947-2011
代替标准：ISO/FDIS 13947-2006
采用标准：BS ISO 13947-2007,IDT
起草单位：ISO/TC 119
标准简介：This International Standard specifies a metallographic method for determining the non-metallic inclusion level in
metal powders using a powder-forged specimen. The test method covers repress powder-forged test
specimens in which there has been minimal lateral flow (< 1 %). The core region of the powder-forged test
specimen contains no porosity detectable at 100× magnification.
This test method can also be used to determine the non-metallic inclusion content of powder-forged steel parts.
However, in parts where there has been a significant amount of material flow, the near-neighbour separation
distance needs to be changed, or the inclusion sizes agreed between the parties need to be adjusted.
This test method is not suitable for determining the non-metallic inclusion level of parts that have been forged
such that the core region contains porosity. At the magnification used for this test method, residual porosity is
hard to distinguish from inclusions. Too much residual porosity makes a meaningful assessment of the inclusion
population impossible.
This test method may be applied to materials that contain manganese sulfide (admixed or prealloyed), provided
the near-neighbour separation distance is changed from 30 μm to 15 μm.
文件格式：PDF
文件大小：200.38KB
文件页数：10
（以上信息更新时间为：2019-11-22）



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