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首页> 外文期刊>Russian Metallurgy(Metally) >Influence of Hot Isostatic Pressing on the Structure and Propertie of an Innovative Low-Alloy High-Strength Aluminum Cast Alloy Based on the Al-Zn-Mg-Cu-Ni-Fe System
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Influence of Hot Isostatic Pressing on the Structure and Propertie of an Innovative Low-Alloy High-Strength Aluminum Cast Alloy Based on the Al-Zn-Mg-Cu-Ni-Fe System

机译：等静压对基于Al-Zn-Mg-Cu-Ni-Fe体系的创新型低合金高强度铝铸合金组织和性能的影响

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摘要

Hot isostatic pressing (HIP) is applied for treatment of castings of innovative low-ally high-strength aluminum alloy, nikalin ATs6N0.5Zh based on the Al-Zn-Mg-Cu-Ni-Fe system. The influence of HIP on the structure and properties of castings is studied by means of three regimes of barometric treatment with different temperatures of isometric holding: t_1 = 505 ± 2°C, p_1= 100 MPa, τ_1 = 3 h (HIP1); t_2 = 525 ± 2°C, p_2 = 100 MPa, τ_2 = 3 h (HIP2); and t_3 = 545 ± 2°C, p_3 = 100 MPa, τ_3 = 3 h (HIP3). It is established that high-temperature HIP leads to actually complete elimination of porosity and additional improvement of the morphology of second phases. Improved structure after HIP provides improvement properties, especially of plasticity. In particular, after heat treatment according of regime HIP2 + T4 (T4 is natural aging), the alloy plasticity is improved by about two times in comparison with the initial state (from ~6 to 12%). While applying regime HIP3 + T6 (T6 is artificial aging for reaching the maximum strength), the plasticity has improved by more than three times in comparison with the initial state, as after treatment according to regimes HIP1 + T6 and HIP2 + T6 (from -1.2 to -5.0%), which are characterized by a lower HIP temperature.
机译：热等静压（HIP）用于处理基于Al-Zn-Mg-Cu-Ni-Fe系统的创新型低合金高强度铝合金nikalin ATs6N0.5Zh的铸件。通过三种等压保持温度下的气压处理方案，研究了HIP对铸件结构和性能的影响：t_1 = 505±2°C，p_1 = 100 MPa，τ_1= 3 h（HIP1）; t_2 = 525±2°C，p_2 = 100 MPa，τ_2= 3 h（HIP2）; t_3 = 545±2°C，p_3 = 100 MPa，τ_3= 3 h（HIP3）。已经确定，高温HIP实际上可以完全消除孔隙并进一步改善第二相的形态。 HIP后改善的结构提供了改善的性能，尤其是可塑性。特别是，在按照方案HIP2 + T4进行热处理（T4为自然时效）之后，合金的塑性比初始状态提高了约两倍（从约6％到12％）。在应用方案HIP3 + T6（T6为达到最大强度的人工时效）时，可塑性与初始状态相比提高了三倍以上，这是根据方案HIP1 + T6和HIP2 + T6处理后（从- 1.2至-5.0％），其特征在于较低的HIP温度。

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