新聞資訊
熱軋溫度對(duì)Ti-45Nb合金棒材微觀組織及力學(xué)性能的影響
發(fā)布人：上海艾荔艾金屬材料有限公司www.bt990.com.cn
更新時(shí)間：2015-09-13
對(duì)Ti-45Nb鈦合金精鍛棒材分別在750、800和850 ℃下進(jìn)行熱軋實(shí)驗(yàn)，并利用光學(xué)顯微鏡對(duì)試樣的橫向和縱向組織進(jìn)行觀察，對(duì)合金的室溫強(qiáng)度和塑性指標(biāo)進(jìn)行測(cè)試。
熱軋溫度對(duì)Ti-45Nb合金棒材微觀組織及力學(xué)性能的影響Influence of rolling temperature on microstructure and mechanical properties of Ti-45Nb alloy bars
對(duì)Ti-45Nb鈦合金精鍛棒材分別在750、800和850 ℃下進(jìn)行熱軋實(shí)驗(yàn)，并利用光學(xué)顯微鏡對(duì)試樣的橫向和縱向組織進(jìn)行觀察，對(duì)合金的室溫強(qiáng)度和塑性指標(biāo)進(jìn)行測(cè)試。結(jié)果表明：在800 ℃溫度下熱軋時(shí)，合金均具有優(yōu)良的室溫強(qiáng)度和塑性，室溫強(qiáng)度在420 MPa以上，室溫塑性大于25%，顯微組織為動(dòng)態(tài)再結(jié)晶的細(xì)小等軸組織，且隨著軋制溫度升高，抗拉強(qiáng)度和塑性在800 ℃軋制時(shí)同時(shí)增高，在850 ℃時(shí)又同時(shí)降低。通過(guò)對(duì)成品絲材的組織和性能對(duì)比分析可知，750和800 ℃軋制的棒材加工到絲材，性能均滿(mǎn)足標(biāo)準(zhǔn)要求，Ti-45Nb合金的最佳熱軋溫度可以確定為750～800 ℃。
The titanium alloy forging bars was hot-rolled at 750, 800 and 850 ℃, respectively, the sample longitudinal and horizontal microstructure were observed using an optical microscope, the strength and plasticity of the alloy was tested at room temperature. The results show that hot-rolled alloys under 800 ℃ have excellent strength and ductility at room temperature, the strength at room temperature is over 420 MPa, ductility at room temperature is over 25%, the microstructure consists of fine equiaxed dynamic recrystallization grains. With the rolling temperature rising, the tensile strength and ductility of the bars rolled at 800 ℃ increase, the tensile strength and ductility of the bars rolled at 850 ℃ decrease. Comparative analysis of microstructure and properties of wires, the mechanical properties of the wires made of the bars rolled at 750 ℃ and 800 ℃ can meet the standards. It can be determined that Ti-45Nb alloy optimum hot rolling temperature is 750~800 ℃.
以上資料由上海艾荔艾金屬材料有限公司提供，歡迎新老客戶(hù)來(lái)電洽購(gòu)。
本文來(lái)自上海艾荔艾金屬材料有限公司http://www.bt990.com.cn，轉(zhuǎn)載請(qǐng)注明出處。