工业纯钛室温等径角挤压的塑性变形机制
ECAP Plastic Deformation Mechanism of Commercial Pure Titanium at Room Temperature
摘 要
采用光学显微镜、透射电子显微镜对工业纯钛室温等径角挤压(ECAP)后的显微组织进行了分析,探讨了滑移、孪生和晶粒转动三种变形机制在其室温塑性变形过程中的作用.结果表明:工业纯钛在室温ECAP变形时,变形机制以滑移和孪生为主;晶粒转动机制发挥了协调大尺寸晶粒的变形并有利于提高工业纯钛变形能力的重要作用;同时动态再结晶也是材料塑性变形的重要协调机制.
变形机制
等径角挤压
commercial pure titanium
deformation mechanism
equal channel angular pressing(ECAP)
Abstract
The microstructure of commercial pure titanium processed by equal channel angular pressing(ECAP)at room temperature was studied by using optial microscopy and TEM.The functions of three deformation mechanisms including slipping,twinning and grain turning during the plastic deformation at room temperature were discussed.The results show that sliding and twinning were the main deformation mechanisms of the commercial pure Ti during ECAP deformation at room temperature.And grain turning was another important mechanism to coordinated the large grain deformation and improve the ductility of commercial pure titanium.Dynamic recrystallization was the important coordination mechanism in plastic deformation.
中图分类号 TG146.2
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(50874086);陕西省教育厅专项基金资助项目(07JK307);西安建筑科技大学重大科技项目创新基金项目(ZX0506)
收稿日期 2009/4/17
修改稿日期 2009/9/18
网络出版日期
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备注王成(1983-),男,陕西榆林人,硕士研究生.
引用该论文: WANG Cheng,ZHAO Xi-cheng,YANG Xi-rong,WANG Xing-yun,DING Ru. ECAP Plastic Deformation Mechanism of Commercial Pure Titanium at Room Temperature[J]. Materials for mechancial engineering, 2010, 34(5): 23～25
王成,赵西成,杨西荣,王幸运,丁茹. 工业纯钛室温等径角挤压的塑性变形机制[J]. 机械工程材料, 2010, 34(5): 23～25
被引情况:
【1】冯广海,杜忠泽,王经涛,赵西成, "45钢500 ℃等径角挤压过程中渗碳体的溶解与球化行为",机械工程材料 35, 26-29(2011)
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【9】王怀柳.间隙杂质对工业纯钛性能的影响[J].特钢技术,2006,12(48):25-28.
【10】付文杰,赵西成,杨西荣,等.室温ECAP和冷轧复合变形工业纯钛的组织和性能[J].材料研究学报,2008,22(3):303-306.
【11】张建斌,马勤,周琦,等.表面强化对工业纯钛显微组织的影响[J].中国有色金属学报,2001,11(6):1037-1040.
【12】娄花芬,汪明朴,唐宁,等.AZ31B镁合金的铸轧组织及其相关变形机制[J].中国有色金属学报,2008,18(9):1584-1589.
【13】李慧中,梁霄鹏,张新明,等.2519铝合金热变形组织演化[J].中国有色金属学报,2008,18(2):226-232.
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