文章信息/Info

Title:

The Progress on Metal Matrix Composites Strengthened and Toughened by Configuration Design

作者:

 耿林; 范國(guó)華

哈爾濱工業(yè)大學(xué)，黑龍江 哈爾濱

Author(s):

 GENG Lin;  FAN Guohua

School of Materials Science and Engineering, Harbin Institute of Technology

關(guān)鍵詞:

金屬基復(fù)合材料; 構(gòu)型設(shè)計(jì); 局域應(yīng)變; 強(qiáng)韌化; 金屬間化合物

DOI:

10.7502/j.issn.1674-3962.2016.09.06

文獻(xiàn)標(biāo)志碼:

A

摘要:

構(gòu)型設(shè)計(jì)是解決金屬基復(fù)合材料強(qiáng)度與塑性（韌性）倒置關(guān)系的一種重要可行途徑，揭示構(gòu)型設(shè)計(jì)對(duì)復(fù)合材料力學(xué)行為的影響規(guī)律是實(shí)現(xiàn)復(fù)合材料可設(shè)計(jì)、可調(diào)控的關(guān)鍵。金屬基復(fù)合材料的構(gòu)型設(shè)計(jì)不僅產(chǎn)生了組元相的微觀組織的變化，同時(shí)也導(dǎo)致了受載條件下局域應(yīng)變(應(yīng)力)狀態(tài)的改變，局域應(yīng)變(應(yīng)力)狀態(tài)的變化將會(huì)明顯影響金屬基復(fù)合材料的力學(xué)特性。同步輻射X射線(xiàn)、中子衍射、數(shù)字圖像關(guān)聯(lián)技術(shù)的快速發(fā)展為我們?cè)�位分析�?fù)合材料的局域應(yīng)變（應(yīng)力）演化行為提供了有力手段，使我們可以建立起“局域應(yīng)變（應(yīng)力）演化”—“強(qiáng)韌化機(jī)制”—“構(gòu)型化設(shè)計(jì)”三者的關(guān)系，將有助于提升對(duì)于復(fù)合材料性能的調(diào)控的能力。本文介紹了構(gòu)型強(qiáng)韌化金屬基復(fù)合材料的研究進(jìn)展，提出基于局域應(yīng)變測(cè)量的復(fù)合材料構(gòu)型強(qiáng)韌化機(jī)制研究思路，并論述了構(gòu)型化設(shè)計(jì)在金屬間化合物基復(fù)合材料中的典型應(yīng)用。

Abstract:

Configuration design is one of feasible strategies to overcome the strength-ductility trade-off of metal matrix composites (MMCs). Revealing the effect of configuration design on the mechanical properties is a key to realize the structural controllability of MMCs. The configuration design of MMCs not only changes the microstructures, but also tailors the distribution of local strain (stress) of MMCs under loading. Correspondingly, the change of local strain (stress) distribution will affect the mechanical properties of MMCs. Some advanced characterization technologies including synchrotron radiation X-ray, neutron diffraction, and digital imaging correlation offer strong tools to analyze the local strain (stress), and help us to determine the relationship of local strain distribution, strengthening and toughening mechanism, configuration design, which will improve our ability to tailor the mechanical properties of MMCs. This paper reviews the recent progress on strengthening and toughening MMCs by structural design, and proposes the framework of elucidating the physical mechanisms of strengthening and toughening behavior through in situ strain tracking. The application of configuration design into MMCs is also reviewed.