1.1 本指南 2. 介绍将使用自动图像分析（AIA）设备分析非金属夹杂物的钢金相试样的两种制备方法。这两种制备方法是用于保留钢中非金属夹杂物的公认方法。本指南不限制用户使用这些方法。 1.2 提出了一种使用差分干涉对比度（DIC）测试制备样品对AIA包裹体工作的适用性的程序。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 使用测试方法手动完成包含评级 E45类 或自动使用练习 E1122 或 E1245 受试样制备质量的影响。本指南提供了经验证的试样制备方法示例，这些方法可在抛光钢试样中保留夹杂物。 4.2 本指南提供了一个程序，用于确定制备的试样是否具有合适的质量，以进行后续夹杂物评级。这些方法均不应解释为定义或确立任何钢种的特定程序或可接受限度。

1.1 This guide 2 covers two preparation methods for steel metallographic specimens that will be analyzed for nonmetallic inclusions with automatic image analysis (AIA) equipment. The two methods of preparation are offered as accepted methods used to retain nonmetallic inclusions in steel. This guide does not limit the user to these methods. 1.2 A procedure to test the suitability of the prepared specimen for AIA inclusion work, using differential interference contrast (DIC), is presented. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. ====== Significance And Use ====== 4.1 Inclusion ratings done either manually using Test Methods E45 or automatically using Practice E1122 or E1245 are influenced by the quality of specimen preparation. This guide provides examples of proven specimen preparation methods that retain inclusions in polished steel specimens. 4.2 This guide provides a procedure to determine if the prepared specimens are of suitable quality for subsequent rating of inclusions. None of these methods should be construed as defining or establishing specific procedures or limits of acceptability for any steel grade.