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熱加工工藝對TA30棒材顯微組織及力學性能的影響
發布人:上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間:2015-09-11
對TA30鈦合金采用2種熱加工工藝鍛造成d 90 mm棒材,對不同工藝加工的棒材進行室溫拉伸、550 ℃高溫拉伸及熱穩定性研究,觀察顯微組織和斷口形貌。
熱加工工藝對TA30棒材顯微組織及力學性能的影響Effect of hot work process on microstructures and mechanical properties of TA30 titanium alloy bar
對TA30鈦合金采用2種熱加工工藝鍛造成d 90 mm棒材,對不同工藝加工的棒材進行室溫拉伸、550 ℃高溫拉伸及熱穩定性研究,觀察顯微組織和斷口形貌。結果表明: 不同工藝棒材均獲得雙態組織,斷口形貌都呈現延性斷口,室溫拉伸、550 ℃高溫拉伸及熱穩定性良好,達到使用要求。但采用在兩相區拔長工藝,可以簡化工序,提高生產效率并顯著提高成材率。
TA30 titanium alloy ingot was forged to d 90 mm bars by two different forging processes, the tensile properties and thermal stabilities at 550 ℃ of the bars between different processing were studied, and the microstructure and fractography were observed. The results show that two kinds of bars forged by different processes obtain bimodal structure, and the fractographies are plastic. The room temperature and high temperature tensile properties and 550 ℃ thermal stabilities of the bars can meet the specification. The stretching process under β transus can simplify the processing, raise efficiency and the ratio of product.
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