Low-Cycle Fatigue Properties of Nickel-Based Superalloys Processed by High-Gradient Directional Solidification
Low-Cycle Fatigue Properties of Nickel-Based Superalloys Processed by High-Gradient Directional Solidification
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高梯度定向凝固镍基高温合金的低周疲劳性能
DOI：
10.1007/s40195-017-0563-x
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发表时间：
2017-03
影响因子：
3.5
通讯作者：
Zhang J.
中科院分区：
文献类型：
--
作者：
Fan Z. D.;Wang D.;Liu C.;Zhang G.;Shen J.;Lou L. H.;Zhang J.
系统研究了DD10（单晶）和DZ53（柱状晶）高温合金在液态金属冷却（LMC）和高速凝固（HRS）工艺下的低周疲劳（LCF）性能。结果表明，LMC固化DZ53的LCF寿命明显优于HRS固化DZ53的LCF寿命。相比之下，对于DD10， LMC在高温下对LCF性能没有显著影响，仅在中温下改善LCF性能。显微组织分析表明，裂纹一般起源于中温下的微孔。然而，由于氧化或高温下脚本- mc附近的持续滑移带，表面出现了裂纹。因此，LMC技术的优点可以归结为减少了影响合金中温LCF性能的铸造缺陷，以及改善了与合金高温LCF性能密切相关的组织均匀性。
The low-cycle fatigue (LCF) properties of DD10 (single-crystal) and DZ53 (columnar-grained) superalloys solidified by liquid-metal cooling (LMC) and high-rate solidification (HRS) processes have been systematically investigated. It was found that the LCF life of DZ53 solidified by LMC was obviously better than that solidified by HRS. In contrast, for DD10, LMC showed no remarkable influences on LCF properties at high temperature and only improved LCF properties at intermediate temperature. Microstructure examination showed that the cracks generally initiated at micropores in the subsurface at intermediate temperature. However, the cracks occurred on the surface due to oxidation, or persistent slip bands near script-MC at high temperature. Therefore, the benefits of LMC technique can be attributed to both of the reduced casting defects which significantly affect the LCF properties at intermediate temperature and the improved microstructural homogeneity which was strongly correlated to the LCF properties of alloys at high temperature.
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DOI：
10.1007/s11661-011-0920-8
发表时间：
2012-03-01
影响因子：
2.8
作者：
Brundidge, C. L.;Vandrasek, D.;Pollock, T. M.
通讯作者：
Pollock, T. M.
DOI：
10.7449/2000/superalloys_2000_3_16
发表时间：
2000
期刊：
Superalloys
影响因子：
--
作者：
B. Seth
通讯作者：
B. Seth
DOI：
10.1007/s11661-006-9085-2
发表时间：
2007-04
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
A. Elliott;T. Pollock
通讯作者：
A. Elliott;T. Pollock
影响因子：
10.9
作者：
Liu, Chengbao;Shen, Jian;Lou, Langhong
通讯作者：
Lou, Langhong
高热梯度定向凝固及其在镍基高温合金加工中的应用
DOI：
10.1016/j.jmatprotec.2009.07.022
发表时间：
2010-01-01
影响因子：
6.3
作者：
Liu, Lin;Huang, Taiwen;Fu, Hengzhi
通讯作者：
Fu, Hengzhi