冷变形MP35N合金的时效强化机理
发布时间：2018-12-29 15:31
【摘要】：为研究MP35N合金时效强化规律及机制,对MP35N合金进行84.18%的冷轧变形后,进行时效处理研究.在万能拉伸机上进行力学性能测试,用OM、SEM、TEM和EDS进行组织分析和微观成分测试.实验结果表明:在500℃时效4 h时,显微硬度达到最大值704.26 HV,抗拉强度为2641.16 MPa,与冷轧态相比,分别提高了30.44%和37.41%;该合金经时效后冷轧撕裂孔洞愈合,在400℃时效后出现了由34个厚度为3 nm左右的细小孪晶组成的"孪晶簇";温度升高到500℃,孪晶尺寸变大、交错,"孪晶簇"消失.未发现Mo原子在孪晶处处偏聚,时效过程中形成的纳米级片状孪晶起到主要的强化作用.
[Abstract]:In order to study the aging hardening law and mechanism of MP35N alloy, the aging treatment of MP35N alloy after 84.18% cold rolling deformation was studied. Mechanical properties were tested on universal drawing machine, microstructure and microstructure were analyzed by OM,SEM,TEM and EDS. The experimental results show that when aging at 500 鈩，
本文编号：2395004
[Abstract]:In order to study the aging hardening law and mechanism of MP35N alloy, the aging treatment of MP35N alloy after 84.18% cold rolling deformation was studied. Mechanical properties were tested on universal drawing machine, microstructure and microstructure were analyzed by OM,SEM,TEM and EDS. The experimental results show that when aging at 500 鈩，
本文编号：2395004
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