Progress in Microstructure and Properties of Laser Remelting Alloys

Chai Xiaohui; Sun Zhiping; Zhang Chu

doi:10.15980/j.tzzz.2019.06.007

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Progress in Microstructure and Properties of Laser Remelting Alloys
Vol. 39, Issue 6, Pages: 608-612(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.06.007

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[1]柴晓徽,孙志平,张矗.激光重熔调控合金组织和性能研究进展[J].特种铸造及有色合金,2019,39(06):608-612.

Chai Xiaohui, Sun Zhiping, Zhang Chu. Progress in Microstructure and Properties of Laser Remelting Alloys. [J]. Special Casting & Nonferrous Alloys 39(6):608-612(2019)
[1]柴晓徽,孙志平,张矗.激光重熔调控合金组织和性能研究进展[J].特种铸造及有色合金,2019,39(06):608-612. DOI： 10.15980/j.tzzz.2019.06.007.

Chai Xiaohui, Sun Zhiping, Zhang Chu. Progress in Microstructure and Properties of Laser Remelting Alloys. [J]. Special Casting & Nonferrous Alloys 39(6):608-612(2019) DOI： 10.15980/j.tzzz.2019.06.007.

摘要

激光重熔是一种以高能量激光束在合金表面连续扫描

从而使合金表层快速熔化、冷却的表面改性技术

它通过细化组织、减少偏析、形成过饱和固溶体等方式来提高材料表面耐磨性、抗腐蚀性能等。讨论了温度场对熔池形态演化的影响以及重熔层的微观组织凝固机理;叙述了激光重熔表面强化技术在改善合金耐磨性和耐腐蚀性方面的研究进展。最后对激光重熔表面改性技术的实际应用进行了展望。

Abstract

Laser remelting is a surface modification technology that continuously scans the surface of the alloy with a high-energy laser beam

and the process of laser remelting is rapid heating then followed by rapid cooling.It can improve the surface wear resistance and corrosion resistance by refining the microstructure

reducing segregation and forming supersaturated solid solution.The influence of temperature field on the morphology evolution of molten pool and the solidification mechanism of remelted layer were described

and the research progress in laser remelting surface strengthening technology in improving the wear resistance and corrosion resistance of alloys was expounded.Finally

the practical application of laser remelting surface modification technology was prospected.