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商業(yè)純鈦拉壓塑性變形行為與機(jī)理
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西北工業(yè)大學(xué) 材料學(xué)院 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北工業(yè)大學(xué) 材料學(xué)院 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北工業(yè)大學(xué) 材料學(xué)院 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北工業(yè)大學(xué) 材料學(xué)院 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北工業(yè)大學(xué) 材料學(xué)院 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北工業(yè)大學(xué) 材料學(xué)院 凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室

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國(guó)家自然科學(xué)基金面上項(xiàng)目(項(xiàng)目號(hào):51275415),國(guó)家自然科學(xué)基金優(yōu)秀青年科學(xué)基金(項(xiàng)目號(hào):51522509)


Plastic Deformation Behaviors and Mechanisms of Commercial Pure Titaium under Tension and Compression
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Northwestern Polytechnical University,,,

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    摘要:

    通過(guò)拉伸試驗(yàn)和壓縮試驗(yàn),獲得了商業(yè)純鈦在不同溫度和不同應(yīng)變速率下的拉伸和壓縮應(yīng)力-應(yīng)變關(guān)系,對(duì)比分析了拉壓變形路徑、變形溫度和應(yīng)變速率對(duì)商業(yè)純鈦塑性變形行為的影響;建立了Zener-Hollomon模型,獲得了變形溫度和應(yīng)變速率對(duì)商業(yè)純鈦壓縮變形加工硬化的作用規(guī)律及商業(yè)純鈦壓縮變形加工圖;基于電子背散射衍射技術(shù),獲得了商業(yè)純鈦晶粒取向分布,結(jié)合拉壓變形特性闡明了商業(yè)純鈦拉伸塑性變形機(jī)理主要是滑移,壓縮塑性變形機(jī)理主要分為滑移-孿生-滑移三個(gè)階段。

    Abstract:

    By tensile and compressive tests of commercial pure titanium (CP-Ti), the tensile and compressive stress-strain relationships under various deformation tempretures and strain rates are obtained. Then, the influences of deformation tempreatures, tension/compression loading paths and strain rates on the stress-strain relationships are investigated. With Zener-Hollomon model, the influencing rules of the temperatures and strain rates on work hardening are obtained and the compressive deformation processing map is constructed. Based on the EBSD analysis, the grain orientations of CP-Ti are obtained and the plastic deformation mechanisms for tension and compression are clarified: the slipping dominates the tension plastic deformation and the mechanism of compression plastic deformation is dominated by slipping-twinning-slipping.

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陶智君,李恒,馬俊,楊恒,楊合,張曉麗.商業(yè)純鈦拉壓塑性變形行為與機(jī)理[J].稀有金屬材料與工程,2017,46(9):2470~2475.[Tao Zhi-jun, Li Heng, Ma Jun, Yang Heng, Yang He, Zhang Xiao-li. Plastic Deformation Behaviors and Mechanisms of Commercial Pure Titaium under Tension and Compression[J]. Rare Metal Materials and Engineering,2017,46(9):2470~2475.]
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  • 收稿日期:2016-11-08
  • 最后修改日期:2017-05-10
  • 錄用日期:2017-04-13
  • 在線發(fā)布日期: 2017-11-29
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