Effect of the content of Nb on growth law of austenite grain in 20CrMnTiH gear steel
Tong Qian, Cui Jingyu, Liu Yangbo, Wang Lifeng
Heat Treatment of Metals . 2014, (7): 39 -43 .  DOI: 10.13251/j.issn.0254-6051.2014.07.009

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