TB10鈦合金的焊接組織與性能
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時間：2016-01-08
研究電子束焊接態(tài)TB10鈦合金的顯微組織和力學性能。
TB10鈦合金的焊接組織與性能Microstructure and mechanical properties of?TB10 titanium alloy after welding研究電子束焊接態(tài)TB10鈦合金的顯微組織和力學性能。結(jié)果表明：TB10板材焊區(qū)經(jīng)過固溶及雙重時效后，可得到較好的強度配合以及優(yōu)異的顯微組織和力學性能；焊接和焊接前的熱處理工藝使焊區(qū)的抗拉強度、屈服強度和塑性均有所下降；經(jīng)過(725 ℃, 1 h, FC)固溶處理后經(jīng)雙重時效處理后，焊區(qū)的沖擊斷裂韌性達到31.3~45.6 J/cm2；固溶+雙重時效處理后，合金基體和焊區(qū)的顯微組織由β相、粗大的初生α相、短小細長的針狀次生α相組成；熱處理后，合金元素在不同相中的重新分布使各相變得更加穩(wěn)定。
The microstructure and mechanical properties of electron beam welding of TB10 titanium alloy were investigated. The results show that, after solution treatment and twice aging treatment, the weld zone of TB10 plate obtains the best combinations of strengths, and showing excellent microstructure and mechanical properties. The processing of weld and post weld heat treatment decreases the tensile strength, yield strength and ductility of weld zone. After (725 ℃, 1 h, FC) solution treatment and twice aging treatment, the weld zone impact toughness is 31.3?45.6 J/cm2. After solid solution treatment and twice aging treatment, the microstructures of the base metal and weld consist of toughness β phase, coarsening primary α phase, short and minimum needle-shape secondary α phase. After heat treatment, alloy elements redistributions in different phases of alloy become more stable than before.
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