Research on the healing behavior of the millimeter-sized cavity defect inside the superalloy by hot isostatic pressing

Research on the healing behavior of the millimeter-sized cavity defect inside the superalloy by hot isostatic pressing
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高温合金内部毫米级空洞缺陷热等静压愈合行为研究

DOI:
10.1016/j.matlet.2018.09.126
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发表时间:
2019-01
期刊:
影响因子:
3
通讯作者:
Nie Baohua
Nie Baohua
中科院分区:
材料科学3区
文献类型:
--
作者:
Zhang Jianglong;Zhang Zheng;Zhao Zihua;Zhong Qunpeng;Nie Baohua

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热等静压(HIP)被认为是修复高温合金内部微观缺陷的有效手段。然而,热等静压能有效地修复宏观缺陷吗?在此,我们设计了一个封闭的高温合金内部的空腔,模拟毫米级的空洞缺陷,并重点研究其愈合行为的热等静压。结果表明,热等静压具有修复毫米级空洞的潜力,根据修复过程中扩散区和蜂窝结构的特点,热等静压修复的主要机制是扩散。这项探索性工作有助于更好地了解和拓宽热等静压的应用,并使制造业可持续发展。
Hot isostatic pressing (HIP) is considered as an effective means in healing micro-defects inside the superalloy. However, can HIP effectively heal macro defect? Here we design a sealed cavity inside the superalloy to simulate the millimeter-sized cavity defect and focus on its healing behavior by HIP. Results show that HIP has the potential to heal the millimeter-scale cavity and the main mechanism is diffusion based on the features of diffusion zone and honeycomb structure during healing process. This exploratory work helps to better understand and broaden the applications of HIP and make the manufacturing sustainable.
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