Ti-6Al-4V合金中α相顆粒溶解的相場(chǎng)模擬
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時(shí)間：2016-01-17
通過(guò)相場(chǎng)方法定量模擬不同α初始顆粒尺寸分布(包括均勻、正態(tài)、對(duì)數(shù)正態(tài)以及雙態(tài)分布)對(duì)Ti-6Al-4V 合金中α相顆粒溶解動(dòng)力學(xué)的影響。方法中引入KKS 模型，從而避免界面能對(duì)化學(xué)自由能的依賴(lài)。
Ti-6Al-4V合金中α相顆粒溶解的相場(chǎng)模擬Simulation of dissolution of α particles in Ti-6Al-4V alloy by?3D phase field model通過(guò)相場(chǎng)方法定量模擬不同α初始顆粒尺寸分布(包括均勻、正態(tài)、對(duì)數(shù)正態(tài)以及雙態(tài)分布)對(duì)Ti-6Al-4V 合金中α相顆粒溶解動(dòng)力學(xué)的影響。方法中引入KKS 模型，從而避免界面能對(duì)化學(xué)自由能的依賴(lài)。結(jié)果發(fā)現(xiàn)：不同α初始顆粒尺寸分布下的α體積分?jǐn)?shù)隨時(shí)間的變化均符合衰減規(guī)律：f=fαexp(?Ktn)，而α相體積分?jǐn)?shù)及顆粒平均半徑隨時(shí)間的演化關(guān)系強(qiáng)烈依賴(lài)于α顆粒的初始尺寸分布。4種分布狀態(tài)下α相的溶解速度從快到慢依次為均勻分布、正態(tài)分布、對(duì)數(shù)正態(tài)分布和雙態(tài)分布。在對(duì)數(shù)正態(tài)和雙態(tài)分布下，顆粒半徑的演化均隨時(shí)間先減小再增加，最后一直遞減，而對(duì)于均勻和正態(tài)分布則隨時(shí)間呈單調(diào)遞減趨勢(shì)。
3D quantitative phase field method coupled with KKS model was applied to study the effect of initial particle size distribution (PSD) on dissolution of α phase in Ti-6Al-4V in real time and length scale. The results show that the volume fraction and average particle radius of α phase depend on the initial particle size distribution. The volume fraction of the α phase decays as f=fαexp(?Ktn). The sequence of dissolution kinetics for different distribution from fast to slow is uniform, normal, lognormal and bimodal. The average particle radius increases after an initial reduction, then decreases monotonously for log-normal and bimodal PSD, but it decreases monotonously with time for uniform and normal PSD.
作為值得信賴(lài)的合作伙伴和高品質(zhì)金屬合金的半成品供應(yīng)商，艾荔艾擁有完善的服務(wù)體系和專(zhuān)業(yè)的團(tuán)隊(duì)。在同客戶(hù)交易的過(guò)程中，我們力求根據(jù)不同的應(yīng)用需求將我們的產(chǎn)品做到精益求精。針對(duì)當(dāng)前和未來(lái)的市場(chǎng)需求，艾荔艾致力于為客戶(hù)提供最佳的金屬材料解決方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
獲取更多我們供應(yīng)的合金和服務(wù)信息，請(qǐng)致電086-021-67660801或發(fā)電子郵件[email protected]聯(lián)系我們，您也可以通過(guò)微博，微信，領(lǐng)英和推特與我們互動(dòng)。
For more information on the alloys and services that we supply,?call us?at 086-021-67660801 or email us at [email protected]. You can also get in touch on social media, we are constantly active on?Weibo,?Weixin,?LinkedIn?and?Twitter.