Mg96.17Zn3.15Y0.5Zr0.18合金高壓下固溶處理時效硬化研究?
發布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-06-24
在4 GPa 高壓下對Mg96.17Zn3.15Y0.5Zr0.18合金進行600~800 ℃固溶處理, 之后在200 ℃進行等溫時效處理. 利用 TEM, HRTEM, SEM, XRD 等分析方法研究了高壓固溶及隨后時效處理后合金的顯微組織, 并測試了 4 GPa 高壓下固溶處理后合金的時效硬化曲線.
Mg96.17Zn3.15Y0.5Zr0.18合金高壓下固溶處理時效硬化研究?AGE-HARDENING RESPONSE FOR Mg96.17Zn3.15Y0.5Zr0.18 SOLID
SOLUTION ALLOY UNDER HIGH PRESSURE 在4 GPa 高壓下對Mg96.17Zn3.15Y0.5Zr0.18合金進行600~800 ℃固溶處理, 之后在200 ℃進行等溫時效處理. 利用 TEM, HRTEM, SEM, XRD 等分析方法研究了高壓固溶及隨后時效處理后合金的顯微組織,
并測試了 4 GPa 高壓下固溶處理后合金的時效硬化曲線. 結果表明, 在 4 GPa 高壓下固溶能大幅提高 Zn
在 Mg 基體中的溶解度, Zn 的溶解度由常壓下 400 ℃固溶后的 2.11% (質量分數,下同) 提高到 4 GPa 高壓下
700~800 ℃固溶后的約6.60%, 獲得了過飽和 α-Mg 固溶體. 在隨后的200 ℃溫時效過程中, 高壓固溶合金
在較短的時間內即可獲得較高的近峰值硬度, 4 GPa 下 800 ℃固溶的合金近峰值時效硬度高達 105 HV, 比
400 ℃固溶處理合金近峰時效硬度(81 HV)提高了約 30%. HRTEM 觀察表明, 4 GPa 高壓下固溶合金時效沉
淀析出相具有很高的析出密度, 且析出相中含有粒狀準晶 I-Mg3Zn6Y 相.
Rare-earth (RE) element addition can remarkably improve the mechanical properties of magnesium
alloys through solid solution and age-hardening. Increasing the solubility in the Mg matrix and enhancing the
precipitation density are effective measures to improve aging strengthening of magnesium alloys. In this work, solid solution treatment at 600~800 ℃ under 4 GPa, and then isothermal aging at 200 ℃ for
Mg96.17Zn3.15Y0.5Zr0.18 alloy was carried out. The microstructures of the high pressure solution treatment
Mg96.17Zn3.15Y0.5Zr0.18 alloy before and after aging were investigated by TEM, HRTEM, SEM and XRD, and
age-hardening curves of Mg96.17Zn3.15Y0.5Zr0.18 alloy after solution treatment under the high pressure of 4 GPa
have been tested. The results show that, as the rise of the solution treatment temperature, I-Mg3Zn6Y and
W-Mg3Zn3Y2 continually dissolved into the Mg matrix, and the solubility of Zn in the Mg matrix drastically
improved after solution treatment under the high pressure of 4 GPa. The solubility of Zn in the Mg matrix reached
up to 6.60% (mass fraction) after solution treatment at 700~800 ℃ under the high pressure of 4 GPa than 2.11%
after solution treatment at 400 ℃ under the atmosphere, and the supersaturated solid solution α-Mg has been
attained. After aging treatment at 200 ℃, the peak hardness of Mg96.17Zn3.15Y0.5Zr0.18 alloy after solution treatment
under the high pressure of 4 GPa could been reached in short aging time, the peak hardness of the Mg96.17Zn3.15Y0.5Zr0.18 alloy after solution treatment at 800 ℃ under 4 GPa was 105 HV, which was increased by
30% than 81 HV of the alloy after solution treatment at 400 ℃ under the atmosphere. HRTEM analysis results
indicated that the high precipitation density was found in the Mg96.17Zn3.15Y0.5Zr0.18 alloy after solution treatment
under the high pressure of 4 GPa, and some of precipitation were particle quasicrystal I-Mg3Zn6Y phases.?
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，微信，領英，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.