熱循環(huán)在線檢測
(哈爾濱工業(yè)大學 材料科學與工程學院， 哈爾濱 150001 ,China)
摘 要: 提出了對金屬材料在無負載條件下進行尺寸穩(wěn)定性評定的熱循環(huán)在線檢測法。實驗證明： 這種方法能對試樣在熱循環(huán)過程中的尺寸變化進行實時檢測， 可同時獲得材料在每次熱循環(huán)之后的尺寸變化規(guī)律和多次循環(huán)之后的尺寸變化總量， 用它來評價不同材料或同一材料經(jīng)不同工藝處理之后的尺寸穩(wěn)定性非常直觀和方便，具有測試周期短、 精度高的特點。
關(guān)鍵字: 尺寸穩(wěn)定性； 熱循環(huán)； 實時檢測
（School of Material Science and Engineering,
Harbin Institute of Technology, Harbin 150001, China）
Abstract:Thermal cycling on-line measuring method was proposed to evaluate the dimensional stability of metal materials unloaded. The test results show that during thermal cycling, not only the dimension change of the samples can be measured at all time, but also the dimension change after every cycling and the sum of change after multiple cycling can be measured. So it is very convenient and visual to evaluate the dimensional stability of different materials or the same material treated by different procedures.
Key words: dimensional stability; thermal cycling; on-line mea
