基于CAFE模型的鎳基合金定向凝固過程顯微組織模擬
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-05-06
采用CAFE模型(Cellular automata finite element method)模擬第二代鎳基高溫合金CMSX4凝固過程中的晶粒生長，并探討澆注溫度和冷卻速度對凝固組織的影響。
基于CAFE模型的鎳基合金定向凝固過程顯微組織模擬Microstructure simulation during directional solidification of nickel-based alloy based on CAFE model采用CAFE模型(Cellular automata finite element method)模擬第二代鎳基高溫合金CMSX4凝固過程中的晶粒生長，并探討澆注溫度和冷卻速度對凝固組織的影響。結(jié)果表明:凝固開始時，首先在鑄錠底部會形成一層取向隨機的細小等軸晶，由于晶粒間的競爭生長，晶粒數(shù)目減小，晶粒尺寸增大，á001？晶向與熱流方向偏離角較大的晶粒逐漸被偏離角較小的晶粒淘汰。澆注溫度的提高會使晶粒尺寸變大、晶粒數(shù)目變小，而冷卻速度的升高卻會使晶粒尺寸變小，與理論分析一致。
CAFE model was adopted to simulate the grain growth during solidification process of the second generation nickel-based superalloy CMSX4, and then the influences of casting temperature and cooling rate on the solidification structure were discussed. The results show that at the beginning of solidification, a layer of fine equiaxed grains with random orientation forms first. Due to the competition between the grain growth, the number of grains decreases, the grain size increases, and the grains with bigger deviation angle of the á001？ crystal orientation deviating from the direction of heat flow are gradually eliminated by the grains with small deviation angle. The increase of pouring temperature will make the grain size bigger, the number of crystal grains decreases, while the increase of cooling rate can make the grain size smaller. The results are consistent with the theoretical analysis.
作為值得信賴的合作伙伴和高品質(zhì)金屬合金的半成品供應商，艾荔艾擁有完善的服務體系和專業(yè)的團隊。在同客戶交易的過程中，我們力求根據(jù)不同的應用需求將我們的產(chǎn)品做到精益求精。針對當前和未來的市場需求，艾荔艾致力于為客戶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.
獲取更多我們供應的合金和服務信息，請致電086-021-67660801或發(fā)電子郵件kefu@ailiaigroup.com聯(lián)系我們，您也可以通過微博，微信，領(lǐng)英，XING，臉書和推特與我們互動。
For more information on the alloys and services that we supply,?call us?at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on?Weibo,?Weixin,?LinkedIn,?XING, Facebook?and?Twitter.