噴射成形Al22Si5Fe3Cu1Mg的高溫耐磨機制

噴射成形Al22Si5Fe3Cu1Mg的高溫耐磨機制Wear resistance mechanism of spray-formed Al22Si5Fe3Cu1Mg at high temperature

采用常規鑄造和噴射成形兩種工藝制造Al22Si5Fe3Cu1Mg高硅鋁合金，研究磨損溫度對合金摩擦行為和磨損機理的影響。結果表明：由于噴射成形高硅鋁合金具有組織細小、成分均勻等特征，在磨擦過程中表現出更好的抗磨損性能。合金的磨損機制隨著溫度的升高而發生轉變，低于臨界溫度時為磨粒和黏著磨損混合形式，高于臨界溫度后轉變為剝層磨損。合金在高溫下磨擦時，由于氧化速度較快，形成的氧化物改善合金的抗磨損性能，但存在一個臨界溫度，當超過臨界溫度時，兩種工藝下的合金均由輕微磨粒和黏著磨損混合形式轉變為嚴重的剝層磨損，噴射成形合金在不同高溫下的抗磨損性能均顯著優于鑄造合金的，且其磨損機制轉變臨界溫度比常規鑄造合金的高約100 ℃。

The effects of temperature on friction behavior and wear mechanism for high-silicon aluminum alloy were systematically studied by comparing two processes of conventional cast and spray-formed for manufacturing Al22Si5Fe3Cu1Mg alloy. The result shows that Al22Si5Fe3Cu1Mg alloy by spray-form process shows better abrasion and wear properties than that by conventional casting. The wear mechanism changes with temperature, which shows mixed wear of abrasive and adhesive at temperature lower than the critical temperature and shows delamination wear at temperature higher than the critical temperature. When explored at high temperature, the formation of oxidation improves the wear resistance for the Al22Si5Fe3Cu1Mg alloy due to the fast oxidation and there exiting a critical temperature when wear increases significantly. The wear mechanism of two materials changes into delamination wear with wear rate increasing dramatically by low wear. Notably, the Al22Si5Fe3Cu1Mg alloy by spray-formed process shows superior wear resistance than that from conventional cast both at high and low temperatures. Moreover, the Al22Si5Fe3Cu1Mg alloy by spray-formed process has higher critical temperature of wear mechanism than that by conventional cast.

全文下載：https://pan.baidu.com/s/1-Xhcv2-AdwaCJvUoJ77jrQ?

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，通項公司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，通項公司致力于為客戶提供最佳的金屬材料解決方案。

TXCO 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. TXCO develops the best alloy material solutions for current and future challenges.

獲取更多我們供應的產品和服務信息，請致電086-021-6786 0205或發電子郵件service@sinoav.com聯系我們，您也可以通過微信，微博，領英，臉書，推特和谷歌+與我們互動。

For more information on the products and services that we supply, call us at 086-021-6786 0205 or email us at service@sinoav.com. You can also get in touch on social media, we are constantly active on Weixin, Weibo, LinkedIn, Facebook, Twitter and Google+.