谁知道球铁的完全铁素体化退火
ASTM A536 牌号60-40-18通常需要完全铁素体化退火，谁知道一般这个工艺是怎么进行的，请大家帮助解释一下。在帮忙说一下推荐工艺。能说出是依据那个标准号的最好。多谢。
另外这个材料的p 10%，请问金相合格么？ ASTM A536 中关于热处理的中英原文，请供大家参考。我不明白是么是完全铁素体化退火？
5. 热处理
5.1 牌号60-40-18通常需要完全铁素体化退火。牌号120-90-02和100-70-03一般需要淬火回火或正火回火或等温热处理。其他牌号可以铸态或热处理状态交付。经过淬火到马氏体再回火热处理的球墨铸铁比相同硬度的铸态材料有低得多的疲劳强度。
5. Heat Treatment
5.1 The 60-40-18 grade will normally require a full ferritizing
anneal. The 120-90-02 and the 100-70-03 grades generally
require a quench and temper or a normalize and temper, or an
isothermal heat treatment. The other two grades can be met
either as-cast or by heat treatment. Ductile iron, that is heat
treated by quenching to martensite and tempering, may have
substantially lower fatigue strength than as cast material of the
same hardness.
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