【摘要】：在考慮了溫度與變形之間的相互作用后,對(duì)經(jīng)典的Fourier瞬態(tài)熱傳導(dǎo)方程進(jìn)行了修正,并采用適合于高溫及高應(yīng)變率條件下的熱彈塑性方程作為本構(gòu)模型,從而建立了在Ti-6Al-4V基體上等離子噴涂羥基磷灰石涂層這一獨(dú)特條件下的熱-力耦合模型。據(jù)此,采用有限元方法對(duì)溫度場(chǎng)和殘余應(yīng)力場(chǎng)進(jìn)行了耦合求解。模擬了基體預(yù)熱溫度對(duì)涂層各個(gè)殘余應(yīng)力分量的影響。此外,為了能得到定量的比較,還采用了"材料去除"的實(shí)驗(yàn)技術(shù)測(cè)試了涂層在界面處的殘余應(yīng)力。結(jié)果表明:計(jì)算結(jié)果與實(shí)驗(yàn)結(jié)果吻合;在界面的邊緣處有明顯的應(yīng)力集中;適當(dāng)提高基體的預(yù)熱溫度對(duì)于減少殘余應(yīng)力是有幫助的。
[Abstract]:After considering the interaction between temperature and deformation, the classical Fourier transient heat conduction equation is modified, and the thermoelastic-plastic equation suitable for high temperature and high strain rate is used as the constitutive model. The thermal-mechanical coupling model of plasma sprayed hydroxyapatite coating on Ti-6Al-4V substrate was established. Based on this, the temperature field and residual stress field are solved by finite element method. The effect of substrate preheating temperature on the residual stress components of the coating was simulated. In addition, in order to obtain quantitative comparison, the residual stress at the interface of the coating was measured by "material removal" technique. The results show that the calculated results are in agreement with the experimental results, the stress concentration is obvious at the edge of the interface, and it is helpful to reduce the residual stress by increasing the preheating temperature of the matrix appropriately.
【作者單位】： 西南交通大學(xué);
【基金】：Applied Basic Research Project in Sichuan Province(2014JY0016)
【分類號(hào)】：TG174.4

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳麗梅;李強(qiáng);;等離子噴涂技術(shù)現(xiàn)狀及發(fā)展[J];熱處理技術(shù)與裝備;2006年01期

2 ;武漢材保所：重新啟用高能等離子噴涂設(shè)備 為建設(shè)“兩型”社會(huì)作貢獻(xiàn)[J];表面工程資訊;2008年02期

3 ;等離子噴涂設(shè)備簡(jiǎn)介[J];材料保護(hù);1966年04期

4 ;等離子噴涂[J];機(jī)車車輛工藝;1971年05期

5 高奉周;;大功率等離子噴涂槍鑒定會(huì)在沈陽(yáng)舉行[J];焊接;1980年06期

6 耿家林;;等離子噴涂修復(fù)發(fā)動(dòng)機(jī)傳動(dòng)桿[J];航空工藝技術(shù);1981年07期

7 谷式，

本文編號(hào)：2150440