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See Chinese contents: JB/T 7946.1-2017 JB/T 7946.1-2017: Metallograph of cast aluminium alloys - Part 1: Cast aluminium-silicon alloys modification
This part of JB/T 7946 specifies the cutting and preparation of metallographic specimens of cast aluminum-silicon alloys, the observation of metallographic structure, the grading of cast aluminum-silicon alloys. This part applies to the evaluation of the grade of modification of cast aluminumsilicon alloys.
