Mechanical property and failure mechanisms of hot rolling and aging treatment with different layer thickness on (CoCrNi)94Al3Ti3/ Maraging -C350 multilayer composite steel
Mechanical property and failure mechanisms of hot rolling and aging treatment with different layer thickness on (CoCrNi)94Al3Ti3/ Maraging -C350 multilayer composite steel
复制标题
(CoCrNi)94Al3Ti3/马氏体时效-C350多层复合钢热轧及不同层厚时效处理的力学性能及失效机制
DOI：
10.1016/j.matchemphys.2021.125645
复制
发表时间：
2022-02
影响因子：
4.6
通讯作者：
Fuxing Yin
中科院分区：
文献类型：
--
作者：
Bingchen Yang;Cuixin Chen;Baoxi Liu;Wei Fang;Zhuoyu Li;Kailun Liu;Jianhang Feng;Fuxing Yin
采用真空热轧工艺制备了平均厚度分别为120 μm、40 μm和35 μm的（CoCrNi）94 Al 3 Ti 3/Maraging-C350多层复合钢，实现了韧性与高强度的结合。同时获得了结合良好的复合界面。与25层120 μm（CoCrNi）94 Al 3 Ti 3/Maraging-C350多层膜和60层40 μm（CoCrNi）94 Al 3 Ti 3/Maraging-C350多层膜相比，100层35 μm（CoCrNi）94 Al 3 Ti 3/Maraging-C350多层膜的抗拉强度和界面剪切强度分别提高到1110 MPa和382 MPa，拉伸试样的最高延伸率为44.2%。经515 ℃-5 h时效处理后，抗拉强度由1100 MPa提高到1710 MPa，剪切强度提高到461 MPa。同时，100 L-HR-A试样具有最高的均匀延伸率20%。时效处理后延伸率的降低是由于马氏体时效-C350层的硬化和断裂方式的转变，以及（CoCrNi）94 Al 3 Ti 3/马氏体时效-C350多层复合钢变形协调性的恶化。过渡层界面处发生微裂纹和塑性变形，横向扩展形成分层，纵向扩展形成隧道裂纹。厚度较小的试样具有较高的断裂韧性。层间结构的增加可以增强增韧层对裂纹的钝化作用，延缓试样的早期颈缩和破坏。
The (CoCrNi)94Al3Ti3/Maraging-C350 multilayer composite steel with average thickness of 120 μm, 40 μm and 35 μm were prepared by vacuum hot rolling technique, which realized the combination of toughness and high strength. Meanwhile, the composite interface with good combination was obtained. Compared with 25 layers-120 μm (CoCrNi)94Al3Ti3/Maraging-C350 multilayer and 60 layers-40 μm (CoCrNi)94Al3Ti3/Maraging-C350, the tensile strength and interface shear strength of 100 layers-35 μm (CoCrNi)94Al3Ti3/Maraging-C350 sample increased to 1110 MPa and 382 MPa, the tensile specimen with a highest elongation of 44.2%. After 515 °C-5 h aging treatment, the tensile strength increased from 1100 MPa to 1710 MPa, and the shear strength increased to 461 MPa. Simultaneously, 100L-HR-A specimen had the highest uniform elongation of 20%. The decrease of elongation after aging treatment was due to the hardening and the transformation of the fracture mode of Maraging-C350 layers, and the deterioration of deformation coordination of (CoCrNi)94Al3Ti3/Maraging-C350 multilayer composite steel. Microcracks and plastic deformation occurred at the interface of the transition layer, delamination was formed because of their transverse propagation, the tunnel cracks were formed owing to its longitudinal propagation. The samples with small thickness scale showed higher fracture toughness. More interlaminar structures could enhance the passivation effect of the toughened layer on cracks, and delay the early necking and collapse of the samples.
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DOI：
10.1007/bf02646603
发表时间：
1993-07
期刊：
Metallurgical Transactions A
影响因子：
--
作者：
C. Syn;D. Lesuer;Jeff Wolfenstine;O. Sherby
通讯作者：
C. Syn;D. Lesuer;Jeff Wolfenstine;O. Sherby
影响因子：
9.1
作者：
S. Nambu;M. Michiuchi;J. Inoue;T. Koseki
通讯作者：
S. Nambu;M. Michiuchi;J. Inoue;T. Koseki
影响因子：
1.2
作者：
T. Koseki;J. Inoue;S. Nambu
通讯作者：
T. Koseki;J. Inoue;S. Nambu
影响因子：
1.8
作者：
Gladman, T
通讯作者：
Gladman, T
DOI：
10.1016/j.msea.2016.05.066
发表时间：
2016-07-04
影响因子：
6.4
作者：
Zhu, Zhichao;He, Yi;Li, Xiao
通讯作者：
Li, Xiao