本文選題：攪拌摩擦焊 + 氧化物彌散強(qiáng)化鋼��； 參考：《焊接學(xué)報(bào)》2015年10期

【摘要】：采用攪拌摩擦焊(friction stir welding,FSW)技術(shù)對(duì)氧化物彌散強(qiáng)化(oxide dispersion strengthen,ODS)鐵素體鋼進(jìn)行了焊接,并對(duì)焊接工藝進(jìn)行了優(yōu)化.當(dāng)轉(zhuǎn)速為150 r/min,焊接速度為30 mm/min時(shí)可以獲得無焊接缺陷的ODS鋼焊接接頭.結(jié)果表明,采用FSW焊接的ODS鋼接頭的微觀組織出現(xiàn)明顯的洋蔥環(huán)結(jié)構(gòu),攪拌區(qū)為等軸再結(jié)晶晶粒,前進(jìn)側(cè)熱機(jī)影響區(qū)表現(xiàn)出明顯的塑性流動(dòng)的特征,熱影響區(qū)的晶粒較母材也發(fā)生了明顯改變.接頭的高溫拉伸性能偏低,但經(jīng)過溫度1 150℃,時(shí)間1 h的熱處理后,其高溫拉伸性能得到大幅提高,與母材拉伸性能接近.
[Abstract]:Friction stir welding (FSW) technique was used to weld oxide dispersion strengthene oxide steel, and the welding process was optimized. When the rotational speed is 150rpm and the welding speed is 30 mm/min, the welded joint of ODS steel without welding defects can be obtained. The results showed that the microstructure of the ODS steel joint welded by FSW showed obvious onion ring structure, the agitating zone was equiaxed recrystallized grain, and the influence zone of the forward side heat engine showed obvious plastic flow characteristics. The grain size of the heat affected zone is obviously different from that of the base metal. The tensile properties of the joints at high temperature are low, but after heat treatment at 1 150 鈩，

本文編號(hào)：1953514