Phase transformation under isostatic pressure in HIP
Phase transformation under isostatic pressure in HIP
复制标题
HIP 等静压下的相变
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
O. Karlsson
中科院分区：
文献类型：
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作者：
A. Angré;M. Ahlfors;D. Chasoglou;Linn Larsson;E. Claesson;O. Karlsson
新型 HIP 冷却系统可在等静压下实现非常快的冷却速率。这不仅可以缩短 HIP 循环，还可以在一个 HIP 循环中执行完整的热处理循环。之前的研究表明，几千巴的极端压力可以将相变推向更长的时间。新型 URQ HIP 冷却系统提供了研究高达 2000 bar 的压力对相变时间依赖性的影响的机会。对于本研究中的两种材料，对 100 和 1700 bar 下的奥氏体相变时间进行了比较。该研究是通过对样品进行特定时间的等温热处理，然后淬火来进行的。为了评估压力对淬透性的影响，使用 SEM 图像上的网格法评估相分数。研究发现HIP压力对淬透性有显着影响。
The new HIP cooling systems enable very fast cooling rates under isostatic pressure. This does not only enable shorter HIP cycles but also allows complete heat treatment cycles to be performed in one HIP cycle. It has been shown in previous studies that extreme pressures of several thousand bar can push phase transformation towards longer times. The new URQ HIP cooling systems give the opportunity to investigate the impact of pressures up to 2000 bar on phase transformation time dependency. For each of the two materials in this study, a comparison of austenite phase transformation time at 100 and 1700 bar was performed. The study was performed by isothermal heat treatment of specimens for a specific time followed by quenching. To evaluate the influence of pressure on hardenability, the phase fractions were evaluated using grid method on SEM images. The study found significant influence of HIP pressure on hardenability.
在 HIP 装置中对马氏体钢粉末进行致密化和硬化，提供高冷却速率
影响因子：
1.4
作者：
Weddeling;Wulbieter;Theisen
通讯作者：
Theisen