广东化工
廣東化工
엄동화공
GUANGDONG CHEMICAL INDUSTRY
2012年
1期
9-11
,共3页
AZ91D%硼酸镁晶须%热膨胀系数%热处理
AZ91D%硼痠鎂晶鬚%熱膨脹繫數%熱處理
AZ91D%붕산미정수%열팽창계수%열처리
AZ91D%magnesium borate whisker%thermal expansion coefficient
文章研究了未经热处理处理、人工时效（200℃,16 h）和固溶（415℃,24 h）时效（200℃,8 h）的Mg2O2B5w/AZ91D复合材料的热膨胀行为。结合它们的维氏硬度和金相,得出析出相的数量越多,热膨胀系数越低;残余应力值越小,CTE到达峰值的温度越低。固溶时效样品的热膨胀系数在286.2℃时达到最大值2.60×10^-5/K,时效样品的热膨胀系数在244.8℃时达到最大值CTE 2.19×10^-5/K。
文章研究瞭未經熱處理處理、人工時效（200℃,16 h）和固溶（415℃,24 h）時效（200℃,8 h）的Mg2O2B5w/AZ91D複閤材料的熱膨脹行為。結閤它們的維氏硬度和金相,得齣析齣相的數量越多,熱膨脹繫數越低;殘餘應力值越小,CTE到達峰值的溫度越低。固溶時效樣品的熱膨脹繫數在286.2℃時達到最大值2.60×10^-5/K,時效樣品的熱膨脹繫數在244.8℃時達到最大值CTE 2.19×10^-5/K。
문장연구료미경열처리처리、인공시효（200℃,16 h）화고용（415℃,24 h）시효（200℃,8 h）적Mg2O2B5w/AZ91D복합재료적열팽창행위。결합타문적유씨경도화금상,득출석출상적수량월다,열팽창계수월저;잔여응력치월소,CTE도체봉치적온도월저。고용시효양품적열팽창계수재286.2℃시체도최대치2.60×10^-5/K,시효양품적열팽창계수재244.8℃시체도최대치CTE 2.19×10^-5/K。
The paper mainly researches the thermal expansion of composite materials Mg2O2B5w/AZ91D,which happens under untreated,artificial aging and solution plus aging.Combined with the analysis of their hardness and microstructure,we learn that the more the number of precipitates is the lower coefficient of thermal expansion is and the lower residual stress is.However,the lower the temperature is,the lower the maximum is.At this time,the sample that solution（24 h） plus aging（8 h）＇s CTE has a maximum of 2.60 × 10^-5 / K,while the sample that aging reaches a maximum of 16 h of 2.19 × 10^-5/K.
