Effect of Gradient Plasticity on Crack Initiation and Propagation in the Ductile-Brittle Transition Region of Ferritic Steel

Effect of Gradient Plasticity on Crack Initiation and Propagation in the Ductile-Brittle Transition Region of Ferritic Steel
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梯度塑性对铁素体钢韧脆转变区裂纹萌生和扩展的影响

DOI:
10.1016/j.prostr.2018.12.008
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发表时间:
2018
期刊:
Procedia structural integrity
影响因子:
--
通讯作者:
G. Hütter
G. Hütter
中科院分区:
--
文献类型:
--
作者:
N. A. Giang;M. Kuna;G. Hütter

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相似文献

铁素体钢韧脆转变区的微裂纹萌生通常是通过铁素体晶界附近或晶界处的碳化物开裂实现的。主要原因是晶界处的位错堆积在碳化物中引起高应力。这种机制不能用经典塑性力学来模拟。在本研究中,有效梯度塑性(标量梯度塑性)结合内聚区模型在一个单位细胞模型来处理这一机制在微观尺度上。
Micro-crack initiation in ductile-brittle transition region of ferritic steel is often observed through cracking of carbides near or at ferritic grain boundary. The main reason is that the dislocation pile-up at a grain boundary induces high stresses in the carbide. This mechanism cannot be modelled by classical plasticity. In the present study, the effective gradient plasticity (scalar gradient plasticity) together with cohesive zone models is employed in a unit cell model to adress this mechanism at the microscale.
DOI: 10.1016/j.tafmec.2017.05.015
发表时间: 2017-12
影响因子: 5.3
作者:
N. A. Giang;M. Kuna;G. Hütter
通讯作者: N. A. Giang;M. Kuna;G. Hütter
具有铁素体-渗碳体微观结构的钢中解理断裂萌生的预测模型 - 第一部分:模型介绍
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
Kazuki Shibanuma;S. Aihara;Katsuyuki Suzuki
通讯作者: Katsuyuki Suzuki
DOI: 10.1016/j.engfracmech.2018.01.022
发表时间: 2018-08
影响因子: 5.4
作者:
A. Seupel;G. Hütter;M. Kuna
通讯作者: A. Seupel;G. Hütter;M. Kuna