CAJ | 학술논문

针对93W-Ni-Fe材料研究钨重合金（WHA）粉末和烧结材料的热等静压（hot isostatic pressing ， HIP）强化工艺，在不同的工艺下进行热等静压实验。结果表明，经热等静压强化处理后，93W-Ni-Fe试验件进一步致密化，相对密度和硬度显著提高，分散度明显减小，且其延性保持在较高水平；提高温度和压力都能在一定程度上提高材料的强度及延伸率和断面收缩率，但温度的提高对强化的影响更明显。对两种工艺进行对比，发现钨合金粉末材料的直接热等静压成形试件的性能指标远小于烧结棒材，可通过提高温度得到一定程度的提高，但最优温度压力参数还需探索。
침대93W-Ni-Fe재료연구오중합금（WHA）분말화소결재료적열등정압（hot isostatic pressing ， HIP）강화공예，재불동적공예하진행열등정압실험。결과표명，경열등정압강화처리후，93W-Ni-Fe시험건진일보치밀화，상대밀도화경도현저제고，분산도명현감소，차기연성보지재교고수평；제고온도화압력도능재일정정도상제고재료적강도급연신솔화단면수축솔，단온도적제고대강화적영향경명현。대량충공예진행대비，발현오합금분말재료적직접열등정압성형시건적성능지표원소우소결봉재，가통과제고온도득도일정정도적제고，단최우온도압력삼수환수탐색。
This work studied the strengthening of 93W-Ni-Fe heavy alloy powder and sintered material by hot isostatic pressing (HIP) .The HIP tests were divided into five groups and four heats in different processes .The results show that ,after the HIP , the 93W-Ni-Fe samples get further densification , higher relative density and hardness , and lower dispersity , also the ductility keeps a higher level .It also shows that raising both the temperature and the pressure can improve the strength ,elongation ,per-centage reduction of area of the material ,but the effect of the temperature is more obvious .Comparing the two processes ,the mechanical properties of W-based alloy powder via directly hot isostatic pressing forming are not as good as those of the sintered bar . Although raising the temperature can improve the mechanical properties to some extent , the optimal temperature and pres-sure parameters also need to be further explored .