Analysis of the interaction between moving α/γ interfaces and interphase precipitated carbides during cyclic phase transformations in a Nb-containing Fe-C-Mn alloy
Analysis of the interaction between moving α/γ interfaces and interphase precipitated carbides during cyclic phase transformations in a Nb-containing Fe-C-Mn alloy
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含 Nb Fe-C-Mn 合金循环相变过程中移动 α/γ 界面与间相沉淀碳化物之间的相互作用分析
DOI：
10.1016/j.actamat.2018.07.052
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发表时间：
2018-10
期刊：
影响因子：
9.4
通讯作者：
van der Zwaag
中科院分区：
文献类型：
--
作者：
Haokai Dong;Hao Chen;Wei Wang;Yongjie Zhang;Goro Miyamoto;Tadashi Furuhara;Chi Zhang;Zhigang Yang;Sybr;van der Zwaag
通过对含0.1wt%Nb的0.1C-1.5Mn合金和不含Nb的0.1C-1.5Mn合金的循环相变实验，系统地研究了奥氏体（γ）→铁素体（α）和铁素体（α）→奥氏体（γ）相变过程中移动的α/γ界面与相间析出碳化物（IPD）的相互作用。观察到在连续加热和冷却过程中的临界反应温度的变化，这是由于钉扎力（PF）源于存在的IPD碳化物。应用吉布斯能量平衡（GEB）模型对实验结果进行了分析，得到α→γ相变的PF约为15 J/mol，γ→α相变的PF约为5 J/mol，与相变的化学驱动力相比，两者都很小。此外，各种修改的Zener钉扎方程也被用来预测PF，发现这些值是从实验中获得的，这表明经典的Zener理论仍然是有前途的潜力碳化物界面相互作用的分析。
The interaction between moving α/γ interfaces and interphase precipitated (IPd) carbides during the austenite (γ) to ferrite (α) and the ferrite (α) to austenite (γ) transformation has been systematically investigated through cyclic phase transformation experiments for a 0.1C-1.5Mn alloy containing 0.1 wt% Niobium (Nb) and its Nb-free counterpart. Shifts in the critical reaction temperatures during continuous heating and cooling are observed, which are attributed to the pinning force (PF) originating from the IPd carbides present. By applying the Gibbs energy balance (GEB) model to analyze experimental results, the PF was derived to be about 15 J/mol for the α→γ transformation and about 5 J/mol for the γ→α transformation, respectively, both of which are quite small compared to chemical driving force of phase transformations. Moreover, various modified Zener pinning equations have also been used to predict the PF, and it was found that these values are comparable with those obtained from experiments, which suggests that the classical Zener theory still has promising potential for carbide-interface interaction analysis.
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影响因子：
6.2
作者：
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DOI：
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发表时间：
1948-06
期刊：
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通讯作者：
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DOI：
--
发表时间：
1988
期刊：
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影响因子：
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通讯作者：
R. M. Smith;D. Dunne
DOI：
10.1179/030634582790427019
发表时间：
1982-01
期刊：
Metal Science
影响因子：
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作者：
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DOI：
10.1098/rspa.1971.0063
发表时间：
1971-01-01
影响因子：
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作者：
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