通过两种工艺锻制了矱350 mm的大规格TC17钛合金棒材，比较了经两种工艺锻制的棒材的显微组织、力学性能及探伤杂波水平。研究结果表明，在单相区采用镦拔变形使变形量大于60％，并在两相区进行拔长，使变形量大于65％，再经840℃×2 h/AC ＋800℃×4 h/WC ＋630℃×8 h/AC 热处理，可得到各项力学性能均符合 GJB 2218 A-2008标准要求且探伤杂波水平可达矱3.2 mm -9～-12 dB的矱350 mm TC17钛合金棒材。
Forging ф350 mm TC17 titanium alloy bars through two schemes , then compared the microstructures , mechanical properties and flaw detection levels of the bars .The results show that , deformed more than 60% using upsetting and stretching forging process in single-phase region and then deformed more than 65% using stretching forging process in dual-phase region , continued with the heat treatment of 840℃×2 h/AC+800℃×4 h/WC+630℃×8 h/AC, the mechanical properties of bars could meet the GJB 2218 A-2008 standard and the flaw detection level was ф3.2 mm -9~-12 dB .
参考文献
| [1] | 《稀有金属材料加工手册》编写组.稀有金属材料加工手册[M].北京:冶金工业出版社,1984:447. |
| [2] | 刘小春,郭志军,王红武,卢轶.固溶处理对TC17合金组织与性能的影响[J].钛工业进展,2006(04):5-7. |
| [3] | 董洁,王永梅,王韦琪.TC4合金超大规格棒材锻造工艺对组织和性能的影响[J].钛工业进展,2012(02):28-31. |
| [4] | 胡宗式.钛合金超声探伤中杂波与组织的关系[J].钛工业进展,2002(06):31-34. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%