鎳基合金Inconel 740激光近凈成形多方向溫度場

鎳基合金Inconel 740激光近凈成形多方向溫度場Multi-direction temperature field of Inconel 740 nickel based alloy in laser engineered net shaping

利用ANSYS有限元數(shù)值模擬研究鎳基高溫合金激光近凈成形中沉積方向(單層10道(0o方向)、斜對角10道(12o方向)、單道10層(90o方向))對第一道的熱影響規(guī)律，并結(jié)合實驗對模擬結(jié)果進行進一步的驗證。結(jié)果表明：沉積單道10層對第一道的熱影響最大。隨著層(道)數(shù)增加，3個沉積方向的溫度梯度均減小，單層10道方向與斜對角10道方向減小趨勢相同；熔覆過程中第一道上中心點應(yīng)力σx由壓應(yīng)力逐漸轉(zhuǎn)變成拉應(yīng)力，并且沉積單層10道時第一道上的拉應(yīng)力數(shù)值最大。觀察鎳基合金Inconel 740成型后的組織發(fā)現(xiàn)，柱狀晶的生長方向從下到上呈外延生長特征并略偏向于材料沉積方向，與模擬結(jié)果一致。

The thermal influences of deposition direction(Single layer and 10 tracks (0° direction), diagonal 10 tracks (12° direction), single track and 10 layers (90° direction)) on the first track in the laser engineered net shaping of nickel-based superalloy were studied by ANSYS finite element numerical simulation, and the simulation results were further validated by experiments. The results show that the deposition of single track and 10 layers has the greatest impact on the first track. As the number of layers (tracks) increasing, the temperature gradients in the three directions decrease, and the decrease trend of the single track and 10 layers direction is same as that of the diagonal 10 tracks direction. During the cladding process, the stress σx on the first center is gradually converted from compressive stress to tensile stress, and the maximum tensile stress is obtained on the first track when the monolayer 10 tracks is deposited. Observation of the microstructure of nickel base alloy Inconel 740 after forming indicates that the growth direction of columnar crystals is characterized by epitaxial growth from bottom to top, and slightly inclines to the direction of material deposition which is in good agreement with the simulation results.

全文下載：https://pan.baidu.com/s/1v0PIV5OaVS-JQv48_YqiZw?

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優(yōu)質(zhì)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 superior 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086-021-3113 6111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 086-021-3113 6111 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+.