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熱加工工藝對(duì)TA30棒材顯微組織及力學(xué)性能的影響
發(fā)布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時(shí)間：2015-09-11
對(duì)TA30鈦合金采用2種熱加工工藝鍛造成d 90 mm棒材，對(duì)不同工藝加工的棒材進(jìn)行室溫拉伸、550 ℃高溫拉伸及熱穩(wěn)定性研究，觀察顯微組織和斷口形貌。
熱加工工藝對(duì)TA30棒材顯微組織及力學(xué)性能的影響Effect of hot work process on microstructures and mechanical properties of TA30 titanium alloy bar
對(duì)TA30鈦合金采用2種熱加工工藝鍛造成d 90 mm棒材，對(duì)不同工藝加工的棒材進(jìn)行室溫拉伸、550 ℃高溫拉伸及熱穩(wěn)定性研究，觀察顯微組織和斷口形貌。結(jié)果表明: 不同工藝棒材均獲得雙態(tài)組織，斷口形貌都呈現(xiàn)延性斷口，室溫拉伸、550 ℃高溫拉伸及熱穩(wěn)定性良好，達(dá)到使用要求。但采用在兩相區(qū)拔長(zhǎng)工藝，可以簡(jiǎn)化工序，提高生產(chǎn)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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