中科院金屬研究所

在Nature Commun.、Acta Mater.、Appl. Phys. Lett.、Sci. Rep.及Scripta Mater.等SCI期刊上發(fā)表學(xué)術(shù)論文43 篇，到2016 年8月為止，發(fā)表論文累計被SCI引用近600次，單篇論文最高被他引122次，個人H因子為13。

主要研究成果：

1. 金屬材料強(qiáng)韌化的層錯能機(jī)制及基應(yīng)用

從原子層面的滑移與孿生機(jī)制的本質(zhì)著手，在理解層錯能對FCC金屬材料變形機(jī)制的基礎(chǔ)上，指出降低層錯能可同步提升其強(qiáng)韌性配合。這一強(qiáng)韌化機(jī)制進(jìn)一步在TWIP鋼及高氮鋼等工程合金中得以驗證及發(fā)展。

2. 孿晶界面的疲勞開裂行為

系統(tǒng)分析了Cu合金中孿晶界面的疲勞開裂行為，指出孿晶界與大、小角晶界不同，在疲勞過程中表現(xiàn)出一定的可調(diào)節(jié)性，隨層錯能、晶體取向等的變化，可實現(xiàn)滑移帶開裂向?qū)\晶界開裂的轉(zhuǎn)變。

3. 材料強(qiáng)度與硬度的一般關(guān)系

通過對不同晶粒尺寸銅合金、非晶及陶瓷材料等的系統(tǒng)研究，分析了材料強(qiáng)度與硬度的關(guān)系，并給出兩者間的一般規(guī)律及適用范圍。

4. 低周疲勞損傷與壽命預(yù)測的能量模型

對于材料的疲勞壽命預(yù)測，著名的Coffin-Manson公式與Basquin公式分別從塑性應(yīng)變及應(yīng)力的角度進(jìn)行了較好地評價。然而，對這些經(jīng)驗公式中各參數(shù)物理意義的認(rèn)識卻十分缺乏，這大大限制了對于材料疲勞損傷本質(zhì)的認(rèn)識。因此，針對“什么是材料疲勞損傷的本質(zhì)原因，如何建立更具物理意義的壽命預(yù)測模型?”兩個問題，我們以能量作為損傷的主要參量提出了疲勞損傷的滯回能模型，并將其應(yīng)用于分析Cu-Al合金與TWIP鋼的疲勞性能。

代表性論文：

1. Li, L. L., Zhang, Z. J., Zhang, P., Wang, Z. G., Zhang, Z. F., Controllable fatigue cracking mechanisms of copper bicrystals with a coherent twin boundary, Nature Commun., 5 (2014).

2. Shao, C. W., Zhang, P. , Liu, R., Zhang, Z. J., Pang, J. C., Duan, Q. Q., Zhang, Z. F., A remarkable improvement of low-cycle fatigue resistance of high-Mn austenitic TWIP alloys with similar tensile properties: Importance of slip mode, Acta Mater., 118 (2016) 196-212.

3. Shao, C. W., Zhang, P. , Liu, R., Zhang, Z. J., Pang, J. C., Zhang, Z. F., Low-cycle and extremely-low-cycle fatigue behaviors of high-Mn austenitic TRIP/TWIP alloys: Property evaluation, damage mechanisms and life prediction, Acta Mater., 103 (2016) 781-795.

4. Tian, Y. Z., Zhao, L. J., Park, N., Liu, R., Zhang, P., Zhang, Z. J., Shibata, A., Zhang, Z. F., Tsuji, N., Revealing the deformation mechanisms of Cu–Al alloys with high strength and good ductility, Acta Mater., 110 (2016) 61-72.

5. Liu, R., Zhang, Z. J., Zhang, P., Zhang, Z. F., Extremely-low-cycle fatigue behaviors of Cu and Cu–Al alloys: Damage mechanisms and life prediction, Acta Mater., 83 (2015) 341-356.

6. Li, L. L., Zhang, P., Zhang, Z. J., Zhou, H. F., Qu, S., Yang, J. B., Zhang, Z. F., Strain localization and fatigue cracking behaviors of Cu bicrystal with an inclined twin boundary, Acta Mater., 73 (2014) 167-176.

7. Li, R. H., Zhang, Z. J., Zhang, P., Zhang, Z. F., Improved fatigue properties of ultrafine-grained copper under cyclic torsion loading, Acta Mater., 61 (2013) 5857-5868.

8. Li, L. L., Zhang, P., Zhang, Z. F., Zhang, Z. F., Effect of crystallographic orientation and grain boundary character on fatigue cracking behaviors of coaxial copper bicrystals, Acta Mater., 61 (2013) 425-438.

9. Zhang, Z. J., Zhang, P., Li, L. L., Zhang, Z. F., Fatigue cracking at twin boundaries: Effects of crystallographic orientation and stacking fault energy, Acta Mater., 60 (2012) 3113-3127.

10. Tian, Y. Z., Li, J. J., Zhang, P., Wu, S. D., Zhang, Z. F., Kawasaki, M., Langdon, T. G., Microstructures, strengthening mechanisms and fracture behavior of Cu–Ag alloys processed by high-pressure torsion, Acta Mater., 60 (2012) 269-281.

11. Zhang, P., Zhang, Z. J., Li, L. L., Zhang, Z. F., Twin boundary: Stronger or weaker interface to resist fatigue cracking?, Scripta Mater (Viewpoint)., 66 (2012) 854-859.

12. Zhang, P., Li, S. X., Zhang, Z. F., General relationship between strength and hardness, Mater. Sci. Eng. A529 (2011) 62-73.