文章信息/Info

Title:

Understanding Advanced Aluminum Alloys with Atom Probe Tomography

文章編號:

1674-3962(2022)11-0891-08

作者:

馮曼; 靳慎豹; 沙剛

（南京理工大學材料科學與工程學院/格萊特研究院，江蘇 南京 210094）

Author(s):

FENG Man;  JIN Shenbao;  SHA Gang

(Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

關鍵詞:

三維原子探針; 鋁合金; 微觀組織; 強化機制; 元素分布

Keywords:

atom probe tomography;  Al alloy;  microstructure;  strengthening mechanism;  element distribution

分類號:

TH83；TG146.21

DOI:

10.7502/j.issn.1674-3962.202207023

文獻標志碼:

A

摘要:

隨著各國對節能環保的日益重視，產業界對高性能輕質可再生鋁合金的需求不斷增加。準確掌握鋁合金的微觀組織結構及它們對性能的影響，對設計高性能鋁合金至關重要。三維原子探針作為一種具有近原子級空間分辨率的表征技術，能夠在近原子尺度上對鋁合金內部微觀結構如固溶體、短程有序、團簇、納米析出相、位/層錯和界面等的元素分布和化學成分進行精準表征，從而為優化鋁合金傳統制備工藝和開發新工藝、新結構鋁合金提供重要的實驗依據。在介紹三維原子探針技術基本原理及數據處理方法的基礎上，分別從鋁合金關鍵微觀組織調控及新工藝、新結構開發等幾個方面，回顧了三維原子探針技術在先進鋁合金表征中的典型應用，探討了三維原子探針技術在鋁合金應用中的局限性及其未來發展方向。

Abstract:

With the increasing demand for environment protection and energy saving, recyclable light-weight Al alloys with high performance become highly demanded for many important applications. Deep understanding of the microstructures of Al alloys and their effects on properties is important for guiding the design and development of high-performance Al alloys. Atom probe tomography (APT), as an advanced characterization technique with near atomic-level spatial resolution, has been used to gain new insight into complex distribution of alloying element atoms in the microstructures of Al alloys. Solid solutions, short-range order, clusters, nano-precipitates, dislocations, stacking faults and interfaces in the near-atomic scale have been studied quantitatively. Such investigations provide an important knowledge base for optimizing processing parameters of Al alloys, designing and developing new advanced Al alloys. In this paper, we firstly introduce the basic principles and data processing of APT, then review the typical application of APT in the development of Al alloys with high performance, and finally discuss the limitations of APT in the application in Al alloys and its future development.