準(zhǔn)靜態(tài)拉伸過程中CoCrFeMnNi高熵合金顯微組織的演變

準(zhǔn)靜態(tài)拉伸過程中CoCrFeMnNi高熵合金顯微組織的演變Microstructure evolution of CoCrFeMnNi high-entropy alloy during quasi-static tensile

采用電子背散射衍射技術(shù)，研究室溫下CoCrFeMnNi高熵合金在準(zhǔn)靜態(tài)單向拉伸(應(yīng)變速率為1×10-1 s-1)過程中顯微組織的演變。結(jié)果表明：合金的變形機制主要是位錯的滑移，同時伴隨著少量的孿生。當(dāng)應(yīng)變約為0.81%時，合金開始出現(xiàn)新的Σ3孿晶界。晶向á001？附近的拉伸軸向á001？方向轉(zhuǎn)動，形成弱的á001？//RD絲織構(gòu)，符合Toylor模型，晶粒拉伸軸向á001？-á111？連線轉(zhuǎn)動，符合Sachs模型。晶粒尺寸顯著影響晶粒的轉(zhuǎn)動速率，小尺寸晶粒轉(zhuǎn)動最快，大尺寸晶粒次之，中等尺寸晶粒轉(zhuǎn)動最慢。晶粒Schmid因子越大，晶粒的轉(zhuǎn)動越快。

The evolution of microstructure of CoCrFeMnNi high-entropy alloy during quasi-static tensile (strain rate 1×10-1 s-1) were investigated using electron backscatter diffraction technology. The results show that the dominant deformation mechanism is dislocation gliding, which is accompanied with less twinning. The alloy generates new Σ3 twin boundaries when the strains is 0.81%. The tensile axes close to á001？ rotate toward á001？ and form a weak á001？//RD fiber texture following Toylor model. The tensile axes rotate to the line of á001？-á111？ following Sachs model, the grain size influences the rotational speed of grains. The rotational speed of small grain is the fastest than big grains and medium grains, and the medium grain is the slowest than other grains. The bigger Schmid factor of grain is, the faster grain rotation is.

全文下載：https://pan.baidu.com/s/1bqUWWrl?

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(yīng)商，通項公司擁有完善的服務(wù)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(yīng)用需求將我們的產(chǎn)品做到精益求精。針對當(dāng)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(yīng)的產(chǎn)品和服務(wù)信息，請致電086-021-6786 0205或發(fā)電子郵件service@sinoav.com聯(lián)系我們，您也可以通過微信，微博，領(lǐng)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+.