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晶體取向?qū)︽嚮鶈尉Ц邷睾辖鸺{米壓痕行為的影響
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西北工業(yè)大學(xué)力學(xué)與土木建筑學(xué)院工程力學(xué)系

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基金項(xiàng)目:

國(guó)家自然科學(xué)基金(51905432)，陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃(2018JQ1030)，航空科學(xué)基金(2016ZD53036)，中央高?；究蒲袠I(yè)務(wù)費(fèi)(310201906zy002)


Effect of crystallographic orientation on nano-indentation behaviors of Nickel based single crystal super alloys
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Affiliation:

Department of Engineering Mechanics,School of Mechanics,Civil Engineering and Architecture,Northwestern Polytechnical University,Xi’an,Shaanxi,PR China

Fund Project:

National Natural Science Foundation of China (Grant No. 51905432), Natural Science Basic Research Program of Shaanxi (Program No. 2018JQ1030), Aeronautical Science Foundation of China (Program No. 2016ZD53036), and the Fundamental Research Funds of the Central Universities (Program No. 310201906zy002).

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    摘要:

    為了研究晶體取向?qū)︽嚮鶈尉Ц邷睾辖鸺{米壓痕行為的影響，采用帶原子力顯微鏡的Berkovich壓頭對(duì)[001], [011]和[111]取向的鎳基單晶高溫合金開(kāi)展了納米壓痕試驗(yàn)。試驗(yàn)結(jié)果顯示晶體取向?qū)汉圯d荷-深度曲線、硬度和彈性模量有顯著影響。晶體取向會(huì)影響γ^"強(qiáng)化相形狀和體積分?jǐn)?shù)，進(jìn)而會(huì)影響其力學(xué)性能。采用晶體塑性理論對(duì)三種典型晶體取向下的納米壓痕響應(yīng)和分解切應(yīng)力分布開(kāi)展有限元模擬，模擬結(jié)果與試驗(yàn)結(jié)果符合得較好。

    Abstract:

    In order to investigate the effect of crystallographic orientation on the nano-indentation behaviors of single crystal super alloys, the nano-indentation experiments with a Berkovich indenter in an atomic force microscope were carried out on [001], [011] and [111] oriented Nickel based single crystal super alloys. Experimental results showed that the indentation load-depth curve, hardness and elastic modulus were remarkably influenced by crystallographic orientation. It is found that the shape and volume fraction of γ^" strengthening phase is dependent on crystallographic orientation, which will influence the mechanical properties. The nano-indentation experiments performed on three typical crystallographic orientations were simulated by using crystal plasticity theory to investigate the indentation responses and the resolved shear stress induced by indentation, and the simulation results showed a good agreement with the experiment results.

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閆五柱,李有亮,溫志勛,鄒邵華,段祖航.晶體取向?qū)︽嚮鶈尉Ц邷睾辖鸺{米壓痕行為的影響[J].稀有金屬材料與工程,2020,49(6):1854~1859.[Yan Wuzhu, Li Youliang, Wen Zhixun, Zou Shaohua, Duan Zuhang. Effect of crystallographic orientation on nano-indentation behaviors of Nickel based single crystal super alloys[J]. Rare Metal Materials and Engineering,2020,49(6):1854~1859.]
DOI：10.12442/j. issn.1002-185X.20190739

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  • 收稿日期:2019-09-11
  • 最后修改日期:2020-04-28
  • 錄用日期:2019-12-12
  • 在線發(fā)布日期: 2020-07-09
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