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发明公开
CN110462090A 铁路车轮 审中-实审

铁路车轮
摘要：
本发明提供即使C含量高也能够抑制先共析渗碳体的生成的铁路车轮。基于本实施方式的铁路车轮具有如下化学组成：以质量％计含有C：0.80～1.15％、Si：0.45％以下、Mn：0.10～0.85％、P：0.050％以下、S：0.030％以下、Al：0.120～0.650％、N：0.0030～0.0200％、Cr：0～0.25％和V：0～0.12％，余量为Fe和杂质，由式(1)定义的铁路车轮的微观组织中的先共析渗碳体量为1.50根/100μm以下。先共析渗碳体量(根/100μm)＝与200μm×200μm的正方形视野的2条对角线交叉的先共析渗碳体的根数的总和/(5.66×100μm)(1)。
摘要（英）：

Provided is a railroad wheel capable of suppressing the generation of proeutectoid cementite even if the C content is high. A railroad wheel according to an embodiment of the present invention contains, in terms of mass%, C: 0.80-1.15%; Si: 0.45% or less; Mn: 0.10-0.85%; P: 0.050% or less; S: 0.030% or less; Al: 0.120-0.650%; N: 0.0030-0.0200%; Cr: 0-0.25%; V: 0-0.12%; and the remainder chemical composition is constituted of Fe and impurities. The amount of proeutectoid cementite, which is defined by formula (1), in the railroad wheel microstructure is 1.50 pieces/100 microns or less. Formula(1): the amount of proeutectoid cementite (pieces/100 microns) = the total number of proeutectoid cementite pieces that cross the two diagonal lines of a square field of view of 200 microns * 200 microns / (5.66 * 100 microns)

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