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高強(qiáng)鈦合金抗拉強(qiáng)度的理論計(jì)算
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國家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃（“973”計(jì)劃）（2007CB613807，2007CB613805）


Theoretical Calculation for Tensile Strength of High Strength Titanium Alloys
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    摘要:

    利用高強(qiáng)鈦合金相及相界面電子結(jié)構(gòu)參數(shù)的統(tǒng)計(jì)值、結(jié)合制備工藝及相變，提出高強(qiáng)鈦合金抗拉強(qiáng)度理論計(jì)算公式，即高強(qiáng)鈦合金的抗拉強(qiáng)度應(yīng)為基體b-Ti的強(qiáng)度與合金元素的固溶強(qiáng)化、界面強(qiáng)化（涵蓋析出強(qiáng)化）產(chǎn)生的強(qiáng)化強(qiáng)度增量之和。以西北有色金屬研究院設(shè)計(jì)的高強(qiáng)亞穩(wěn)b鈦合金Ti-B20的實(shí)驗(yàn)研究為基礎(chǔ)，分別計(jì)算Ti-B20合金在b相區(qū)固溶處理、a+b相區(qū)固溶處理及780 ℃固溶+時(shí)效處理后的抗拉強(qiáng)度，計(jì)算結(jié)果與實(shí)驗(yàn)研究符合較好。

    Abstract:

    By means of the statistical data of valence electron structure parameters of metallic phase and phase interfaces combined with the preparation technology and phase transformation, the theoretical calculation formulae for the tensile strength of high strength titanium alloys were put forward, i.e., the tensile strength of high strength titanium alloys is the sum of strength of b-Ti and the strengthening strength increments caused by solid-solution strengthening and interface strengthening including precipitation strengthening of alloying element. Based on the experimental data of the high strength metastable b titanium alloy Ti-B20 developed by Northwest Institute for Nonferrous Metal Research, its tensile strength was calculated when it was treated by solid solution above b transus, below b transus and at 780 °C followed by aging, respectively. The calculation results agree well with the experimental results.

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林 成,尹桂麗,劉志林,趙永慶,吳 歡,葛 鵬.高強(qiáng)鈦合金抗拉強(qiáng)度的理論計(jì)算[J].稀有金屬材料與工程,2010,39(7):1189~1194.[Lin Cheng, Yin Guili, Liu Zhilin, Zhao Yongqing, Wu Huan, Ge Peng. Theoretical Calculation for Tensile Strength of High Strength Titanium Alloys[J]. Rare Metal Materials and Engineering,2010,39(7):1189~1194.]
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  • 收稿日期:2009-06-19
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