Enhancing elevated temperature strength of copper containing aluminium alloys by forming L1(2) Al(3)Zr precipitates and nucleating θ″ precipitates on them.
Enhancing elevated temperature strength of copper containing aluminium alloys by forming L1(2) Al(3)Zr precipitates and nucleating θ″ precipitates on them.
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DOI：
10.1038/s41598-017-11540-2
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发表时间：
2017-09-11
影响因子：
4.6
通讯作者：
Chattopadhyay K
中科院分区：
文献类型：
--
作者：
Kumar Makineni S;Sugathan S;Meher S;Banerjee R;Bhattacharya S;Kumar S;Chattopadhyay K
第二相析出强化是开发大量高强度结构合金，特别是交通运输用铝合金的指导原则。更高的效率和更低的排放要求在更高的工作温度 (200°C–250°C) 和应力下使用合金，特别是在发动机零件的应用中。不幸的是，目前可用的大多数沉淀硬化铝合金都可以承受 150–200°C 的最高温度。该限制是由沉淀物快速粗化的开始和随之而来的机械性能损失决定的。在本次交流中，我们提出了一种通过固态沉淀途径设计铝基合金的新方法，该方法提供了两种不同类型沉淀物的协同耦合，使我们能够开发出抗粗化高温合金，该合金在 250–300°C 的温度范围内保持稳定，在 250°C 时强度超过 260MPa。
Strengthening by precipitation of second phase is the guiding principle for the development of a host of high strength structural alloys, in particular, aluminium alloys for transportation sector. Higher efficiency and lower emission demands use of alloys at higher operating temperatures (200 °C–250 °C) and stresses, especially in applications for engine parts. Unfortunately, most of the precipitation hardened aluminium alloys that are currently available can withstand maximum temperatures ranging from 150–200 °C. This limit is set by the onset of the rapid coarsening of the precipitates and consequent loss of mechanical properties. In this communication, we present a new approach in designing an Al-based alloy through solid state precipitation route that provides a synergistic coupling of two different types of precipitates that has enabled us to develop coarsening resistant high-temperature alloys that are stable in the temperature range of 250–300 °C with strength in excess of 260 MPa at 250 °C.
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DOI：
10.1016/0036-9748(84)90424-1
发表时间：
1984-01-01
期刊：
SCRIPTA METALLURGICA
影响因子：
--
作者：
GAYLE, FW;VANDERSANDE, JB
通讯作者：
VANDERSANDE, JB
影响因子：
9.4
作者：
He, J;Han, G;Yokogawa, K
通讯作者：
Yokogawa, K
DOI：
10.4028/www.scientific.net/msf.217-222.1257
发表时间：
1996-01-01
期刊：
ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3
影响因子：
--
作者：
Nie, JF;Muddle, BC;Polmear, IJ
通讯作者：
Polmear, IJ
影响因子：
3.7
作者：
HOSHEN, J;KOPELMAN, R
通讯作者：
KOPELMAN, R
影响因子：
41.2
作者：
Radmilovic, V.;Ophus, C.;Dahmen, U.
通讯作者：
Dahmen, U.