鍛件組織不均勻性對新型近β鈦合金組織與力學(xué)性能的影響

鍛件組織不均勻性對新型近β鈦合金組織與力學(xué)性能的影響Effect of microstructure inhomogeneity of forgings on microstructure and mechanical properties of new near β titanium alloy

研究一種新型β鈦合金在兩相區(qū)鍛造后，邊部、1/2R、心部組織的不均勻性對后續(xù)熱處理組織性能的影響。結(jié)果表明：合金經(jīng)750 ℃固溶后，3個位置組織中的初生α相分布不同，經(jīng)800 ℃固溶后，β相發(fā)生不同程度的再結(jié)晶。合金經(jīng)750 ℃+(510 ℃，8 h)固溶時效后，邊部和1/2R處的組織出現(xiàn) “β斑”現(xiàn)象；合金經(jīng)800 ℃+ 510 ℃，8 h固溶時效后，1/2R處和心部次生α相的析出存在明顯的不均勻性。時效過程中組織的不均勻性導(dǎo)致合金3個位置強度和斷裂韌性各不相同。在(750 ℃，0.5 h，AC)+(510 ℃，8 h，AC)固溶時效條件下，合金1/2R處的綜合性能實現(xiàn)了高強高韌的良好匹配。

The influence of inhomogeneity of original microstructures including edge, 1/2R and core of a new β titanium alloy via α+β forging process on microstructures and mechanical properties following heat treatments were investigated. The results show that the distribution of primary α phase in three locations was nonuniform after the alloy solution-treated at 750 ℃, and at 800 ℃, different degree of recrystallization occurred within β phase. The alloy solution-treated at 750 ℃ followed by aging at 510 ℃ for 8 h, the microstructure with beta fleck happened in edge and 1/2R. Under the same aging condition, when the solution treatment was taken at 800 ℃, the secondary α phase with obviously uneven distribution precipitates in 1/2R and core. This inhomogeneity of microstructures during aging treatments results in different mechanical properties both of strength and fracture toughness in three locations. The alloys treated at (750 ℃, 0.5 h, AC)+(510 ℃, 8 h, AC) acquires good strength-toughness match, and high strength and high toughness of alloy at the location of 1/2R reaches the well match of high strength and high toughness.

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

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+.