·570· 工程科学学报，第41卷，第5期 装工艺，特别是服役过程中有可能发生的延迟开裂 grained structure of austenite.Acta Mater,2015,84:I 等，中锰钢大规模推广应用前必须要进行系统的研 [12]Cao WQ,Wang C,Shi J,et al.Microstructure and mechanical 究和全面的认知.为提高中锰钢延迟开裂性能，可 properties of Fe-0.2C-5Mn steel processed by ART-annealing. Mater Sci Eng A,2011,528(22-23):6661 以提高具有大的氢溶解度和慢的扩散系数的奥氏体 [13]Cai Z H,Ding H,Kamoutsi H,et al.Interplay between deform- 相的体积分数，并调控奥氏体相的形貌和分布，尽可 ation behavior and mechanical properties of intereritically an- 能以纳米级薄膜状形态存在于马氏体板条界，使其 nealed and tempered medium-manganese transformation-induced 成为氢扩散的一道道屏障，从而阻止氢的富集，提高 plasticity steel.Mater Sci Eng A,2016,654:359 抗氢性能.控制中锰钢的塑性变形和成形性，可通 [14]Lee S,De Cooman B C.Tensile behavior of intercritically an- 过调控奥氏体相内元素分布改善其稳定性.另外， nealed ultra-fine grained8%Mn multi-phase steel.Steel Res Int, 2015,86(10):1170 对处于多相组织中的奥氏体相的层错能计算和形变 [15]Heo Y U,Suh D W,Lee H C.Fabrication of an ultrafine- 预报模型的研究，有可能会成为中锰钢不同于其他 grained structure by a compositional pinning technique.Acta Ma- 超高强度马氏体钢的一个方向，如是，则可以通过计 ter,2014,77:236 算反过来指导临界退火等工艺参数的选择，凭借材 [16]Li Z C,Ding H,Cai Z H.Mechanical properties and austenite 料基因工程计算、实验和数据库的融合，实现中锰钢 stability in hot-rolled 0.2C-1.6/3.2Al-6Mn-Fe TRIP steel. 的高效研发. 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