文章信息/Info

Title:

MECHANICAL PROPERTIES AND IRRADIATION TOLERANCE OF METALLIC NANOLAMINATES

作者:

張金鈺; 吳 凱; 劉 剛; 孫 軍

西安交通大學金屬材料強度國家重點實驗室

Author(s):

ZHANG Jinyu;  WU Kai;  LIU Gang;  SUN Jun

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University

關鍵詞:

金屬納米疊層材料; 界面; 塑性變形; 輻照損傷容限; 尺寸效應

Keywords:

metallic nanolaminates;  interface;  plastic deformation;  irradiation damage tolerance;  size effect

分類號:

TG113

DOI:

10.7502/j.issn.1674-3962.2018.08.02

文獻標志碼:

A

摘要:

金屬納米疊層材料由于不僅可以調整其組元幾何和微觀結構尺度，而且可以引入具有不同本征性能的組元材料和不同結構的層間異質界面，在獲得高強韌與高輻照損傷容限金屬結構材料方面具有潛在的能力. 本文結合當前國內外有關金屬疊層材料力學性能與輻照特性尺寸效應研究的最新進展, 分別闡述了晶體/晶體Cu/Mo與晶體/非晶Cu/Cu-Zr金屬疊層材料He+輻照前后的結構演變與力學特性, 揭示了上述兩類金屬疊層材料的強化與損傷機制的異同, 并對納米疊層材料研究的發展趨勢進行了展望。

Abstract:

Metallic nanolaminates act as one class of typical heterogeneous materials and manifest great potential to obtain the structural materials with the combination of high strength/toughness and superior irradiation tolerance, owing to their tunable dimensional and microstructural length as well the great advantage of tunable interfacial structures. The present authors had systematically investigated the size effects on the plastic characteristics and irradiation behavior of crystalline/crystalline Cu/Mo and crystalline/amorphous Cu/Cu-Zr nanolaminates, in addition to their microstructure evolution. In this paper, the progress and the difference in the underlying strengthening mechanisms and irradiation damage mechanisms of these two kinds of metallic nanolaminates are reviewed. Finally, a brief prospect on the studies of highly irradiated tolerant nanolaminates in future is discussed.