Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy

Effect of Long-Term Thermal Exposures on Tensile Behaviors of K416B Nickel-Based Superalloy
复制标题

长期热暴露对 K416B 镍基高温合金拉伸行为的影响

DOI:
10.1007/s40195-020-01075-3
复制
发表时间:
2020-06
期刊:
Acta Metallurgica Sinica (English Letters)
影响因子:
--
通讯作者:
Zhou Yi-Zhou
Zhou Yi-Zhou
中科院分区:
其他
文献类型:
--
作者:
Chen Mao-Kai;Xie Jun;Shu De-Long;Hou Gui-Chen;Xun Shu-Ling;Yu Jin-Jiang;Liu Li-Rong;Sun Xiao-Feng;Zhou Yi-Zhou

文献摘要

参考文献

相似文献

研究了长时间热暴露对高W含量镍基高温合金K416B拉伸性能的影响。通过扫描电镜和透射电镜观察合金的显微组织和变形特征,通过x射线衍射图和差热分析分析合金在长期热暴露过程中的相变。结果表明:在1000℃高温下,K416B合金中的theMC碳化物分解为tom6c;在拉伸变形过程中,γ基体中的位错滑移通过Orowan弯曲机制跨越theM6C。随着热暴露时间的延长,二次ym6c的加入大大降低了合金的室温屈服强度。同时,具有较大脆性的次生ym6c在晶界的持续分布可能成为裂纹的主要来源,使合金的断裂特征由沿晶向沿晶转变。
The effect of long-term thermal exposure on the tensile behavior of a high W content nickel-based superalloy K416B was investigated. The microstructure and the deformation characteristics were observed by scanning electron microscopy and transmission electron microscopy, and the phase transformation of the alloy during long-term thermal exposure was analyzed by X-ray diffraction patterns and differential thermal analysis. Results showed that after thermal exposure at 1000 °C, theMC carbides in the K416B alloy decomposed intoM6C. During tensile deformation, dislocations slipping inγmatrix crossed over theM6C by Orowan bowing mechanism. With the increase of thermal exposure time, the secondaryM6C reduced greatly the yield strength of the alloy at room temperature. Meanwhile, the continuous distribution of the secondaryM6C with great brittleness in the grain boundary could become the main source of crack, which might change the fracture characteristic of the alloy from trans-granular to intergranular.
DOI: 10.1007/s40195-018-0827-0
发表时间: 2019
期刊: Acta Metallurgica Sinica (English Letters)
影响因子: --
作者:
Li Xiang-Wei;Wang Li;Liu Xin-Gang;Wang Yao;Dong Jia-Sheng;Lou Lang-Hong
通讯作者: Lou Lang-Hong
DOI: 10.1016/j.msea.2018.04.037
发表时间: 2018-05
影响因子: 6.4
作者:
Zhou Tongjin;H. Ding;Xiuping Ma;W. Feng;Huibin Zhao;Meng Yu;Huaxia Zhang;Yongmin Lv
通讯作者: Zhou Tongjin;H. Ding;Xiuping Ma;W. Feng;Huibin Zhao;Meng Yu;Huaxia Zhang;Yongmin Lv
DOI: 10.1016/j.scriptamat.2005.06.021
发表时间: 2005-10
期刊: Scripta Materialia
影响因子: 6
作者:
Liangfu Zheng
通讯作者: Liangfu Zheng
DOI: 10.1016/0956-7151(92)90195-k
发表时间: 1992-01-01
期刊: ACTA METALLURGICA ET MATERIALIA
影响因子: --
作者:
POLLOCK, TM;ARGON, AS
通讯作者: ARGON, AS
DOI: 10.1017/cbo9780511810947.008
发表时间: 1998-07
期刊: --
影响因子: --
作者:
Marc A. Meyers;K. K. Chawla-K.
通讯作者: Marc A. Meyers;K. K. Chawla-K.