本文選題：NiTi合金　切入點(diǎn)：熱處理　出處：《材料熱處理學(xué)報(bào)》2017年03期 　論文類型：期刊論文

【摘要】：利用OM、XRD、SEM、EDS和DSC等分析測(cè)試手段研究了不同熱處理方式對(duì)60NiTi合金中第二相析出,及其對(duì)馬氏體轉(zhuǎn)變和硬度的影響。結(jié)果表明:固溶后水淬處理能顯著提高鑄態(tài)60NiTi合金的硬度,但爐冷處理卻顯著降低合金的硬度。400℃時(shí)效略微降低固溶后水冷合金的硬度,但長(zhǎng)時(shí)間時(shí)效對(duì)硬度的影響不大。Ni_3Ti相的大量固溶是固溶水冷處理顯著提高鑄態(tài)合金硬度的原因,而固溶后爐冷合金硬度下降則來(lái)源于更多Ni_3Ti相的析出。60NiTi合金的硬度取決于馬氏體轉(zhuǎn)變發(fā)生的難易程度。
[Abstract]:The effect of different heat treatment methods on the second phase precipitation, martensite transformation and hardness of 60NiTi alloy was studied by means of DSC and OMXRDX. The results show that the hardness of as-cast 60NiTi alloy can be significantly improved by water quenching after solution. However, the hardness of the alloy decreased slightly after aging at 400 鈩，

本文編號(hào)：1635017