偏离<001>取向15<sup>o</sup>的三种镍基单晶高温合金试样的中温蠕变变形行为

doi:10.11901/1005.3093.2019.242

材料研究学报

2019, Vol. 33

Issue (12): 892-896 DOI: 10.11901/1005.3093.2019.242

研究论文

本期目录 | 过刊浏览

偏离<001>取向15^o的三种镍基单晶高温合金试样的中温蠕变变形行为

李钢¹,张思倩²,张宗鹏²,王迪³,王栋³(

),董加胜³

1. 中国航发湖南动力机械研究所株洲 412002
2. 沈阳工业大学材料科学与工程学院沈阳 110870
3. 中国科学院金属研究所沈阳 110016

Creep Deformation of Three Samples Misaligned 15^o from <001> Crystallographic Axis for a Nickel-based Single Crystal Superalloy DD413

Gang LI¹,Siqian ZHANG²,Zongpeng ZHANG²,Di WANG³,Dong WANG³(

),Jiasheng DONG³

1. AECC Hunan Aviation Powerplant Research Institute, Zhuzhou 412002, China
2. School of Material Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

李钢,张思倩,张宗鹏,王迪,王栋,董加胜. 偏离<001>取向15^o的三种镍基单晶高温合金试样的中温蠕变变形行为[J]. 材料研究学报, 2019, 33(12): 892-896.
Gang LI, Siqian ZHANG, Zongpeng ZHANG, Di WANG, Dong WANG, Jiasheng DONG. Creep Deformation of Three Samples Misaligned 15^o from <001> Crystallographic Axis for a Nickel-based Single Crystal Superalloy DD413[J]. Chinese Journal of Materials Research, 2019, 33(12): 892-896.

全文: PDF(3473 KB) HTML

摘要:

研究了一种偏离<001>取向15^o的镍基单晶高温合金的中温蠕变(760℃/793 MPa)性能和变形组织。结果表明：取向靠近<001>-<101>边界合金的蠕变寿命最长，而取向靠近<001>-<111>边界合金的蠕变寿命最短。虽然三种试样取向偏离<001>的夹角都约为15^o，但是其微观变形组织明显不同。取向靠近<001>-<101>边界试样的变形主要受控于{111}<110>滑移系，而取向靠近<001>-<111>边界试样变形主要受控于{111}<112>滑移系。

关键词 ：金属材料, 单晶高温合金, 中温蠕变, 取向偏离, 滑移系

Abstract：

The intermediate temperature creep behavior and microstructure of samples misaligned 15^o from <001> crystallographic axis for a nickel-based single crystal superalloy were systematically investigated. The results show that the creep life of samples with orientation close to the <001>-<101> symmetry boundary is the longest, while the creep life of samples with orientation close to the <001>-<111> symmetry boundary is the shortest. Although the misorientation angles of the three samples deviated from <001> were all about 15^o, their microstructure was obviously different. The deformation of the samples close to the <001>-<101> was mainly controlled by the sliding system of {111}<110>, while the deformation of the samples close to the <001>-<111> was mainly controlled by the sliding system of {111}<112>.

Key words： metallic materials single crystal superalloy intermediate temperature creep orientation sliding system

收稿日期: 2019-05-12

ZTFLH:

TG142

基金资助:国家重点研发计划(2016YFB0701403);国家自然科学基金(51101160);国家自然科学基金(51631008);国家科技重大专项(2017-VI-0003-0073);国家科技重大专项(W0112-025R1);辽宁省自然科学基金指导计划(20180550998)

作者简介: 李钢，男，1980年生，高级工程师

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https://www.cjmr.org/CN/10.11901/1005.3093.2019.242 或 https://www.cjmr.org/CN/Y2019/V33/I12/892

图1 DD413合金取向偏离的示意图

图2 偏离<001>取向15o的DD413合金在760℃/793 MPa条件下的应变-时间曲线

图3 偏离<001>取向15o的DD413合金蠕变第一阶段的透射电镜照片

图4 偏离<001>取向15o的DD413合金蠕变第二阶段的透射电镜照片

图5 偏离<001>取向15o的DD413合金蠕变第三阶段的透射电镜照片

图6 不同滑移系对应的靠近<001>晶体取向偏转图

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