Ti-1023鈦合金的疲勞極限與拉伸強(qiáng)度的關(guān)系
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：2015-12-29
通過熱處理得到3種強(qiáng)度級(jí)別的Ti-1023合金材料。拉伸和疲勞試驗(yàn)結(jié)果表明，在時(shí)效溫度為510~560 ℃的范圍內(nèi)，Ti-1023合金的軸向拉壓疲勞極限隨屈服強(qiáng)度的提高而提高。拉伸斷口分析表明，高強(qiáng)度Ti-1023的斷裂模式為沿晶斷裂，在較低強(qiáng)度Ti-1023斷裂模式以韌性斷裂為主的韌性和沿晶斷裂的混合斷裂模式。疲勞斷口分析則表明，在較低載荷時(shí)，時(shí)效溫度對(duì)斷口疲勞區(qū)域的影響較小。
Ti-1023鈦合金的疲勞極限與拉伸強(qiáng)度的關(guān)系Relationship between fatigue limit and tensile strength of?Ti-1023 titanium alloys通過熱處理得到3種強(qiáng)度級(jí)別的Ti-1023合金材料。拉伸和疲勞試驗(yàn)結(jié)果表明，在時(shí)效溫度為510~560 ℃的范圍內(nèi)，Ti-1023合金的軸向拉壓疲勞極限隨屈服強(qiáng)度的提高而提高。拉伸斷口分析表明，高強(qiáng)度Ti-1023的斷裂模式為沿晶斷裂，在較低強(qiáng)度Ti-1023斷裂模式以韌性斷裂為主的韌性和沿晶斷裂的混合斷裂模式。疲勞斷口分析則表明，在較低載荷時(shí)，時(shí)效溫度對(duì)斷口疲勞區(qū)域的影響較小。
The Ti-1023 alloys with three levels of strengths were achieved through heat treatment. The analysis of tensile and axial tension-compression fatigue test shows that the fatigue limits raise with raising yield strength between 510 ℃ and 560 ℃ aging temperatures. The tensile fracture analysis indicates that it will be intergranular rupture pattern with high strength, and will transfer to mixed fracture pattern with mainly ductile rupture and a small amount of intergranular rupture. Aging temperature has little effect on fatigue area of fracture face under lower load.
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