,1274. 北京科技大学学报 第30卷 1 um 0.1山m 0.5m 图9位错定义参考图.氢质量分数分别为0(a),0.1%(b)和0.5%(c) Fig.9 Reference diagram for dislocation definition.The mass fractions of hydrogen are(a).0.1%(b),and .5%.respectively A106 C259% A20% C30% C50% 455 B60% B559 (a)0%H b)0.1%H (c)0.5%H 图10置氢Ti6A一4V合金变形后的位错分布图.氢质量分数分别为0(a),0.1%(b)和0.5%(c) Fig.10 Dislocation distribution maps of hydrogenated Ti-6Al-4V alloys with different mass fractions of hydrogen after high temperature deforma tion:(a)0:(b)0.1%;(c)0.5% 2005,13(1):103 3结论 (苏彦庆,路良顺.置氢对Ti6A一4V合金室温组织的影响. 材料科学与工艺,2005,13(1):103) (1)适量的氢可以降低钛合金的流变应力和变 [4]Gong B.Lai Z H.Improving microstructure and performance on 形温度,并提高应变速率敏感指数m值;Ti6A一 titanium alloy by chemical process.Chin I Nonferrous Met, 4V合金置入0.1%的氢,其峰值流动应力下降 1994,4(3):86 53%,变形温度下降约60℃. (宫波,赖祖涵。用热化学处理改普(α十)型钛合金的组织和 (2)氢对钛合金组织演变有着重要的影响,随 力学性能.中国有色金属学报,1994,4(3):86) 着氢含量的增加,B相数量增加;氢质量分数达 [5]Ding H,Gao JC.Zhang C P.Effects of hydrogen on microstrue- ture and superplasticity forTi3Al-Nb.J Iron Steel Res,2000.12 0.2%时,合金中出现马氏体,并随着氢含量的增加 (2):48 而逐渐粗化. (丁桦,高建成,张彩培.氢对TisA一Nb合金超塑性和组织结 (3)氢不仅可以促进钛合金变形过程中再结晶 构的影响.钢铁研究学报,2000,12(2):48) 作用,而且可以促进位错的运动,使变形更易于进 [6]SenkovJJ.Dynamic strain aging and hydrogen induced softening 行 in alpha titanium.Metall Mater Trans,1996,27:1877 [7]Zhang Y.Zhang S Q.Hydrogenation characteristics of Ti-6Al-4V 参考文献 cast alloy and its microstructural modification by hydrogen treat- ment.Int J Hydrogen Energy.1997.22(2/3):161 [1]Hou HL.LiZ Q.Wang Y J.Technology of hydrogen treatment [8]Zhang H.Lam T F,Xu J L.The effect of hydrogen on the for titanium alloy and its application prospect.Chin I Nonferrous strength and superplastic deformation of beta titanium alloys. Me,2003,13(3):533 Mater Sci.1996,31:6105 (侯红亮,李志强,王亚军,钛合金氢处理技术及其应用前景 [9]Kahandel R.Yashi K.Recent advancement in superplastic form- 中国有色金属学报,2003,13(3):533) ing and diffusion bonding (SPF/DB)technology/Proceeding of [2]Kolachev B A.Mitin B B.Talaaev V D.Hydrogen technology of ICSA M1997.Bangalore.1997:687 titanium alloys.Aviat Manuf,1991(1):58 [10]Salishchev G A.Valiakhmetov O.Beck W,et al.Production of [3]Su Y Q.Luo L S.Influence of hydrogen on microstructure in Ti-6Al-4V sheets for low temperature superplastic forming room temperature for Ti-6Al-4V alloy.Mater Sci Technol. Proceeding of ICSA M2006.Chengdu.2006:31图9 位错定义参考图.氢质量分数分别为0(a)0∙1% (b)和0∙5% (c) Fig.9 Reference diagram for dislocation definition.The mass fractions of hydrogen are0(a)0∙1% (b)and0∙5%respectively 图10 置氢 Ti-6Al-4V 合金变形后的位错分布图.氢质量分数分别为0(a)0∙1% (b)和0∙5% (c) Fig.10 Dislocation distribution maps of hydrogenated T-i6A-l4V alloys with different mass fractions of hydrogen after high-temperature deformation:(a)0;(b)0∙1%;(c)0∙5% 3 结论 (1) 适量的氢可以降低钛合金的流变应力和变 形温度并提高应变速率敏感指数 m 值;Ti-6Al- 4V 合金置入 0∙1% 的氢其峰值流动应力下降 53%变形温度下降约60℃. (2) 氢对钛合金组织演变有着重要的影响.随 着氢含量的增加β相数量增加;氢质量分数达 0∙2%时合金中出现马氏体并随着氢含量的增加 而逐渐粗化. (3) 氢不仅可以促进钛合金变形过程中再结晶 作用而且可以促进位错的运动使变形更易于进 行. 参 考 文 献 [1] Hou H LLi Z QWang Y J.Technology of hydrogen treatment for titanium alloy and its application prospect.Chin J Nonferrous Met200313(3):533 (侯红亮李志强王亚军.钛合金氢处理技术及其应用前景. 中国有色金属学报200313(3):533) [2] Kolachev B AMitin B BTalaaev V D.Hydrogen technology of titanium alloys.Aviat Manuf1991(1):58 [3] Su Y QLuo L S.Influence of hydrogen on microstructure in room temperature for T-i6A-l4V alloy. Mater Sci Technol 200513(1):103 (苏彦庆骆良顺.置氢对 Ti-6Al-4V 合金室温组织的影响. 材料科学与工艺200513(1):103) [4] Gong BLai Z H.Improving microstructure and performance on α+βtitanium alloy by chemical process.Chin J Nonferrous Met 19944(3):86 (宫波赖祖涵.用热化学处理改善(α+β)型钛合金的组织和 力学性能.中国有色金属学报19944(3):86) [5] Ding HGao J CZhang C P.Effects of hydrogen on microstructure and superplasticity forTi3A-l Nb.J Iron Steel Res200012 (2):48 (丁桦高建成张彩培.氢对 Ti3Al-Nb 合金超塑性和组织结 构的影响.钢铁研究学报200012(2):48) [6] Senkov J J.Dynamic strain aging and hydrogen induced softening in alpha titanium.Metall Mater T rans199627:1877 [7] Zhang YZhang S Q.Hydrogenation characteristics of T-i6A-l4V cast alloy and its microstructural modification by hydrogen treatment.Int J Hydrogen Energy199722(2/3):161 [8] Zhang HLam T FXu J L.The effect of hydrogen on the strength and superplastic deformation of beta titanium alloys.J Mater Sci199631:6105 [9] Kahandel RYashi K.Recent advancement in superplastic forming and diffusion bonding (SPF/DB) technology∥ Proceeding of ICSA M1997.Bangalore1997:687 [10] Salishchev G AValiakhmetov OBeck Wet al.Production of T-i6A-l4V sheets for low temperature superplastic forming ∥ Proceeding of ICSA M2006.Chengdu2006:31 ·1274· 北 京 科 技 大 学 学 报 第30卷