TZM Alloy’s Breaking Tenacity Researching
- Details
- Category: Molybdenum knowledge
- Published on 26 November 2015
- Written by yiping
- Hits: 433
Due to TZM alloy has great high temperature performance so it play an important role in national economy and sciences technologies. TZM piercing point is an important tool for producing steel tube. It can drill stainless steel, heat resistant steel and rock drill steel and the server life is 300 times than steel mould. During drill process, the piercing point easy broke this is because at the heat and cool condition the piercing point suffer pressing, pulling, twisting and other complex stress which easy occurs cold hot fatigue crack with drill times increase the cracks extent lead to the piercing point broke. Breaking tenacity is a aggregative indicator for alloy’s strengthening and plasticity, researching breaking tenacity for alloy technics investigation improving, machine design, inspection and maintenance is essential part. So researching breaking tenacity for explore new production technology and heating-treating process has significant meaning. The research data are as following.
1.TZM alloy after 1200℃vacuum treatment the breaking tenacity KIC valve is higher than sintering’s.
2.After 1300℃, 1400 ℃ vacuum treatment and 1300℃, 1400℃,1500℃ hydrogen treatment the breaking tenacity KIC valve is lower than sintering’s.
3.TZM alloy breaking mainly because the component has micro-crack, cavity and impurity so the raw material powder’s properties and purity control should very strict.
4.TZM alloy at 1300℃ employ heat-treatment can’t improve alloy’s breaking tenacity. Only at 1200℃ vacuum treatment can improve breaking tenacity and the properties of alloy improves as well.
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