测量了放置1年(1 a)的BNbRE和BNb钢供货(即热轧)态重轨踏面区样品及其700℃,30 min,水冷(W.C.)室温变形样品的内耗.结果表明,两种钢的热轧态样品均有Snoek-KoKoster(SKK)峰,但内耗有较明显的差异:BNb钢轨的SKK峰明显高于、也宽于BNbRE钢的SKK峰,前者的峰温较后者约高20℃;但前者没有Snoek峰,后者则有该峰.两种钢变形样品的SKK峰大体相同.同时,测量了放置2年(2 a)的两种钢轨的供货样品和变形样品的内耗,结果与放置1 a的样品有明显不同.
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