首页|WE43镁合金激光熔覆温度场和应力场数值模拟

WE43镁合金激光熔覆温度场和应力场数值模拟

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采用高斯面热源建立了WE43镁合金表面激光熔覆Al-Si共晶粉末过程的温度场以及热应力场数值模型.通过改变激光熔覆功率和激光扫描速度,得到了温度云图,并获取了同一节点的温度热循环曲线和热应力分布图.结果表明,随着激光功率的增加,激光熔覆涂层的最高温度和热应力均持续增加.此外,当保持激光熔覆功率600 W不变时,随着激光扫描速度的提高,激光熔覆涂层的最高温度呈现出降低的态势,然而热应力却呈先降低后上升趋势.理论上WE43镁合金表面激光熔覆Al-Si共晶粉末的最佳激光功率为600 W,最佳扫描速度为3 mm/s.
Numerical Simulation on Temperature and Stress Field of WE43 Magnesium Alloy Laser Cladding
The numerical models of temperature field and thermal stress field of laser cladding Al-Si eutectic powder on WE43 magnesium alloy surface were established by using Gaussian surface heat source.By varying the laser melting power and laser scanning velocity,the temperature clouds maps were obtained,and the temperature thermal cycling curves and thermal strain distribution maps of the same node were also obtained.The results indicate that the highest temperature and thermal stress of the laser clad coating both rise continuously with the increase of laser power.In addition,when the laser power is kept constant 600 W,the highest temperature of the laser clad coating exhibits a decreasing trend with the increase of the laser scanning velocity,however,the thermal stresses display a first decreasing and then increasing trend.Theoretically,the optimal laser power for laser coating of Al-Si eutectic powder on the surface of WE43 magnesium alloy is 600 W and the optimal scanning velocity is 3 mm/s.

WE43 magnesium alloylaser claddingnumerical simulation

胡正强、雷声、申家升、张海浪、李云

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安徽建筑大学 机械与电气工程学院,安徽 合肥 230601

安徽省工程机械智能制造重点实验室,安徽 合肥 230601

WE43镁合金 激光熔覆 数值模拟

2024

热加工工艺
中国船舶重工集团公司热加工工艺研究所 中国造船工程学会船舶材料学术委员会

热加工工艺

CSTPCD北大核心
影响因子:0.55
ISSN:1001-3814
年,卷(期):2024.53(24)