新聞資訊
7150鋁合金高溫熱壓縮變形流變應力行為
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-12-17
在Gleeble?1500熱模擬機上對7150鋁合金進行高溫熱壓縮實驗，研究該合金在變形溫度為300~450 ℃和應變速率為0.01~10 s?1 條件下的流變應力行為。
7150鋁合金高溫熱壓縮變形流變應力行為Flow stress behavior of 7150 aluminum alloy during hot compression deformation at elevated temperature
在Gleeble?1500熱模擬機上對7150鋁合金進行高溫熱壓縮實驗，研究該合金在變形溫度為300~450 ℃和應變速率為0.01~10 s?1?條件下的流變應力行為。結果表明：流變應力在變形初期隨著應變的增加而增大，出現峰值后逐漸趨于平穩；峰值應力隨著溫度的升高而減小，隨著應變速率的增大而增大；可用包含Zener-Hollomon參數的Arrhenius雙曲正弦關系來描述合金的熱流變行為，其變形激活能為226.698 8 kJ/mol；隨著溫度的升高和應變速率的降低，合金中拉長的晶粒發生粗化，亞晶尺寸增大，再結晶晶粒在晶界交叉處出現并且晶粒數量逐漸增加；合金熱壓縮變形的主要軟化機制由動態回復逐步轉變為動態再結晶。
The flow stress behavior of 7150 aluminum alloy during hot compression deformation was studied by thermal simulation test at the deformation temperature of 300?450 ℃ and the strain rate of 0.01?10 s?1?on the Gleeble?1500 thermal-mechanical simulator. The results show that the flow stress increases with increasing strain and tends to be constant after a peak value. The peak stress increases with increasing strain rate, and decreases with increasing deformation temperature, which can be represented by a Zener-Hollomon parameter in the hyperbolic sine equation with the hot deformation activation energy of 226.6988 kJ/mol. With increasing temperature and decreasing strain rate, the elongated grains in the deformed samples are coarsened and the size of subgrain increases; the number of fine grain in grain boundary also increases,?indicating that the main softening mechanism of the alloy during hot compression deformation transforms from dynamic recovery to dynamic recrystallization.
作為值得信賴的合作伙伴和高品質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的團隊。在同客戶交易的過程中，我們力求根據不同的應用需求將我們的產品做到精益求精。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或發電子郵件kefu@ailiaigroup.com聯系我們，您也可以通過微博和微信和我們互動。
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?and?Weixin.