钛工业进展
鈦工業進展
태공업진전
TAI GONGYE JINZHAN
2013年
6期
30-33
,共4页
Ti-6Ta合金%等离子焊接%腐蚀%性能
Ti-6Ta閤金%等離子銲接%腐蝕%性能
Ti-6Ta합금%등리자한접%부식%성능
Ti-6Ta alloy%plasma welding%corrosion%properties
采用等离子弧焊对3 mm及12 mm厚Ti-6Ta合金板材进行了焊接实验，通过光学显微镜和腐蚀试验研究了焊接接头的组织形貌和耐腐蚀性能，同时测试了焊接接头的力学性能和弯曲性能。结果表明：采用等离子弧进行焊接的Ti-6Ta合金，其焊接热影响区为粗大的等轴晶粒，焊接熔区晶粒组织则呈粗大的不规则形貌。并且， Ti-6Ta合金等离子焊焊接接头的强度和弯曲性能与母材相当，塑性稍有下降。此外，焊接热应力对接头的强度和弯曲性能影响较小，焊接接头在沸腾硝酸中具有良好的耐腐蚀性能，且焊接接头的耐蚀性对焊接热应力不敏感。
採用等離子弧銲對3 mm及12 mm厚Ti-6Ta閤金闆材進行瞭銲接實驗，通過光學顯微鏡和腐蝕試驗研究瞭銲接接頭的組織形貌和耐腐蝕性能，同時測試瞭銲接接頭的力學性能和彎麯性能。結果錶明：採用等離子弧進行銲接的Ti-6Ta閤金，其銲接熱影響區為粗大的等軸晶粒，銲接鎔區晶粒組織則呈粗大的不規則形貌。併且， Ti-6Ta閤金等離子銲銲接接頭的彊度和彎麯性能與母材相噹，塑性稍有下降。此外，銲接熱應力對接頭的彊度和彎麯性能影響較小，銲接接頭在沸騰硝痠中具有良好的耐腐蝕性能，且銲接接頭的耐蝕性對銲接熱應力不敏感。
채용등리자호한대3 mm급12 mm후Ti-6Ta합금판재진행료한접실험，통과광학현미경화부식시험연구료한접접두적조직형모화내부식성능，동시측시료한접접두적역학성능화만곡성능。결과표명：채용등리자호진행한접적Ti-6Ta합금，기한접열영향구위조대적등축정립，한접용구정립조직칙정조대적불규칙형모。병차， Ti-6Ta합금등리자한한접접두적강도화만곡성능여모재상당，소성초유하강。차외，한접열응력대접두적강도화만곡성능영향교소，한접접두재비등초산중구유량호적내부식성능，차한접접두적내식성대한접열응력불민감。
Plasma welding processes were available for 3 mm and 12 mm thick Ti-6Ta alloy plates.The microstrures and properties of joints were investigated by means of optical microscopy , tensile tests, bending tests and corrosion re-sistance tests in boiling HNO 3 solution .The results indicate that the strength and bending properties of the welds are much the same as base metal but the ductility decreases .Welding thermostress has little effect on the strength and ben-ding properties of welding joints . Coarse equaxed crystal in welding heat-affected zone and irregular microstructure morphology in welding melting zone are also observed .Welding thermostress are not sensitive to the corrosion resistance .
